Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e702d60b2595fe0…

MALICIOUS

PDF

92.7 KB Created: 2021-06-28 01:51:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: eab60ca9ff8c0d07783f9d29e41aaf3d SHA-1: cbf83e48bfc425b589d769c58c6c2e43d8fd5259 SHA-256: 1e702d60b2595fe0b9a253a082a7a9d4e3333a5b057a28faf78b1c163a7ddadc
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains a link farm with numerous URLs, many hosted on compromised CMS uploads, suggesting an attempt to direct users to malicious content. The presence of multiple external URIs and a link farm heuristic strongly supports a phishing or malware distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://www.sport-konyv.hu/userfiles/file/dexafibuzabiju.pdf In PDF document text
    • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6e2fccda9b---27552511571.pdfIn PDF document text
    • https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/c906c05024440952029883e92ff33cdf/xupolozupaxadalos.pdfIn PDF document text
    • http://poslovniimenik.net/firme_data/files/dimitipat.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/659ec06bb08b261d0caca8740c1e8edd/44625744512.pdfIn PDF document text
    • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ce2e5ab196---badufajudonobosowe.pdfIn PDF document text
    • https://baoyi-chuck.com/ckfinder/userfiles/files/medinadoginuganasofiti.pdfIn PDF document text
    • http://springswellness.net/wp-content/plugins/formcraft/file-upload/server/content/files/16075563500d3a---51799977621.pdfIn PDF document text
    • http://wccflooring.com/userfiles/files/85948284242.pdfIn PDF document text
    • https://indacphuc.com/wp-content/plugins/super-forms/uploads/php/files/497ed4jck5mke2oke49rvpela5/jenuvemutor.pdfIn PDF document text
    • https://study-go.info/wp-content/plugins/super-forms/uploads/php/files/712fdaa6b07e87da97dc598ea2d772a9/11752829600.pdfIn PDF document text
    • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608dd85548f0a---sogobupozibagogujepeva.pdfIn PDF document text
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0b8e3b2d7b---guvewikosixekadifozub.pdfIn PDF document text
    • https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/1609db67300de4---80278765393.pdfIn PDF document text
    • https://performanceltg.com/wp-content/plugins/super-forms/uploads/php/files/199b5001c31118983346aa281e8e6204/woxujapixipavifenapopisu.pdfIn PDF document text
    • https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c0226c6201---fofobekefigavufibude.pdfIn PDF document text
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a8fc0241fd3---59914499451.pdfIn PDF document text
    • https://interior-mark.com/ckfinder/userfiles/files/49360130866.pdfIn PDF document text
    • https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/80917e08b1e69230a8d89a3a2e821036/41429377115.pdfIn PDF document text
    • http://bigband-ulm.de/userfiles/files/79204740128.pdfIn PDF document text
    • https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/8578b0e853159f10b8fde5b822e5f336/67076572141.pdfIn PDF document text
    • https://elicopter-de-inchiriat.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160d8f78c8318a---18575875365.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=free+aptitude+test+with+answersPDF 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_off00010802.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10802 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00012019.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12019 10484 bytes
SHA-256: 20ffdebdb017c7781cb7fb6c97db53c8e1a50beb9a8c9c597e84fe3ff53f5aa8
font_02_sfnt_off000137e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137E6 17528 bytes
SHA-256: 1db1baf730aa7103b167f286d2fb6984ba503648b3082494641032a228bb4bb8

Open this report in the interactive analyzer, or submit your own file for analysis.