Malicious PDF — malware analysis report

Static analysis result for SHA-256 fea2f7177ba8a413…

MALICIOUS

PDF

82.9 KB Created: 2021-07-19 03:09:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 0d1122e214e57debc6f96d745ad0c613 SHA-1: 5b42e8f887ec3a8fe138ea93a4b1f1f52c613036 SHA-256: fea2f7177ba8a413d2cc1ca2643251150c5d31948759f30ea4b023564db7fef6
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links pointing to various websites, many of which appear to be compromised or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and a raw IP address in the PDF further supports this. No scripts were extracted, but the overall structure and heuristic firings point towards a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://stadtbild-intervention.de/Quansis/ckfinder/userfiles/files/29189633115.pdf In PDF document text
    • http://abpaluso.com/upload/file/19092681166.pdfIn PDF document text
    • https://textosolutionslinguistiques.ca/upload/editor/file/62240712294.pdfIn PDF document text
    • https://beruanglucu.com/contents//files/fuzafodupapaleduvodikajo.pdfIn PDF document text
    • http://geologocarmignani.com/userfiles/files/dobametipibu.pdfIn PDF document text
    • https://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/0f692ea86e25996625f5a87d7d59ee56/suxagogelubapoletatijo.pdfIn PDF document text
    • http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606f4f575d74f---57319897281.pdfIn PDF document text
    • http://sgpeo.pl/users//file/zamagamifafadabenedaj.pdfIn PDF document text
    • http://clubselectionvoyages.com/images/file/53874425002.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/6581bf3658d475b7498400bf941b936b/dokifegutaf.pdfIn PDF document text
    • http://hoteldazegliotorino.com/userfiles/files/vumapiwat.pdfIn PDF document text
    • http://apple888.vn/luutru/files/78260887491.pdfIn PDF document text
    • https://europartner2.pl/uploads/figemotarowalalabito.pdfIn PDF document text
    • https://www.autodepotperformancegroup.ca/wp-content/plugins/super-forms/uploads/php/files/atfqsnbuego3u8r8kf437j1flo/35903951999.pdfIn PDF document text
    • https://www.alpha-dynamics.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1607f6008df098---tegatebubifofovibodod.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/160e2d9e90c34f---57585188940.pdfPDF link annotation
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/kisotku98sdhs7pup7nok3iu15/doroxedukarubazujitor.pdfIn PDF document text
    • http://stsaischoolamritsar.com/slbdavbatala/userfiles/file/boros.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/160e91d2ed415a---87330122153.pdfIn PDF document text
    • http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/160826779bae43---jodajan.pdfIn PDF document text
    • http://nktrading.qa/file/files/wozepupileguwanezasa.pdfIn PDF document text
    • http://sun-tes.ru/files/file/87163988071.pdfIn PDF document text
    • https://dijitalsanat.link/upload/files/barugodifodivixerikatox.pdfIn PDF document text
    • http://damnoen.com/ckfinder/pho/files/35673252580.pdfIn PDF document text
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e037cf01f8---77782863781.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=merge+two+excel+filesPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2B5 10424 bytes
SHA-256: 28ed8f45346edbee39ed5e3b96ddce825a0753209f9fc2f885bd82994469e300
font_01_sfnt_off0000fa8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA8A 16760 bytes
SHA-256: c77c68a7af1be3adc63b2a81a2792d2b86d27ec3cca7b121750cd85eb9270e73
font_02_sfnt_off00012673.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12673 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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