Malicious PDF — malware analysis report

Static analysis result for SHA-256 27ee8e89a1679e95…

MALICIOUS

PDF

95.8 KB Created: 2021-07-09 05:47:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15
MD5: 06f5d4828250d29143d19b7258a27f6a SHA-1: 875c0d1c6c4ab58a3f0a5ec9e8fb6461b1a15842 SHA-256: 27ee8e89a1679e95468a53cdfabfc1bd25c8e25f35fc8ed6996a8d98c5a4176e
156 Risk Score

Malware Insights

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

This PDF file contains numerous embedded URLs, many of which point to compromised websites or disposable hosting, suggesting a phishing or malware distribution scheme. The ClamAV detection and ML classifier strongly indicate malicious intent, likely involving the exploitation of PDF vulnerabilities to redirect users. No scripts were extracted, but the link farm nature of the document is the primary indicator of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9446

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://allytemp.ru/uplcv?utm_term=chow+chow+fight PDF link annotation
    • https://accesoriosalmayor.com/images/userfiles/file/punomavekojukatokozolit.pdfIn PDF document text
    • https://armagedonspedycja.pl/files/file/26485249420.pdfIn PDF document text
    • https://airflow-skateboards.com/upload/file/vufuzunagasudorewibake.pdfIn PDF document text
    • https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/970b32f6fcfffec4723e29e8fd71fee0/kelumofujuloginaxeme.pdfIn PDF document text
    • https://www.hdcorp.com.br/wp-content/plugins/super-forms/uploads/php/files/5ed18c35ac5snnsc25to1df6us/29194734524.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b667c9170d7---vazimifisoniriluzi.pdfIn PDF document text
    • http://exmar.it/foto_fck/file/83462309779.pdfIn PDF document text
    • http://ehoron21.mn/uploads/files/1746889403.pdfIn PDF document text
    • http://hanabi-la.com/uploads/files/79818664276.pdfIn PDF document text
    • https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/fafb5542072b096fdee9bfd9e34421b5/35228412709.pdfIn PDF document text
    • http://hesexpo.com/img/editor/image/file/dudowudavade.pdfIn PDF document text
    • https://annekienlen.fr/imagesfile/50302028886.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7f79fa5448---wizukedurijadij.pdfIn PDF document text
    • http://hzqzg.com/d/files/telenebatukobijukowozi.pdfIn PDF document text
    • http://noxsun.com/jingkelun/userfiles/files/20210603165526.pdfIn PDF document text
    • http://geredekombiservisi.com/userfiles/file/89668413354.pdfIn PDF document text
    • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/c925b291f7a8811aae867b0bf7140f12/73745325144.pdfIn PDF document text
    • https://akproauto.net/nbloom/fckuploads/file/44737462438.pdfIn PDF document text
    • https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/3f3cc75ae3e4a7060eee6a3e6d8172ad/sepagekexifarijubuloba.pdfIn PDF document text
    • http://i-daa-wl.de/userfiles/66976299270.pdfIn PDF document text
    • https://arerp.kr/data/file///55535291527.pdfIn PDF document text
    • http://ajisushionline.com/uploads/files/widajipitegemelepox.pdfIn PDF document text
    • https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/69adcd6c277024d963d5b12fc63d5a12/96454589626.pdfIn PDF document text
    • https://beltamas.by/content/Files/60538855042.pdfIn PDF document text
    • http://mosvag.ru/img/lib/file/32358614395.pdfIn PDF document text
    • https://voolabs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607879650a1e5---fiketobevofomos.pdfIn PDF document text
    • http://harlit.com/ckfinder/userfiles/files/20210630_231030.pdfIn PDF document text
    • 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6BB 1928 bytes
SHA-256: cfb40ad9134443e8cc5492f13f6a9393d6ba36466a38d02b20b85c9de14a7154
font_01_sfnt_off0000ffb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFB6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000117cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117CD 10020 bytes
SHA-256: 7450955c4a77dc26d2a8f8c277831cc35b7ba6897bcca07c17919c9697fa7b2b
font_03_sfnt_off00012e40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E40 16252 bytes
SHA-256: bfc7ce51a1a9b37382af61f0075eb0cdb972126da031002d338643432d80e6e4
font_04_sfnt_off0001441c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1441C 17248 bytes
SHA-256: 8f8dabcbc8e36bde6d19992e8c3ba33182da26a644371e4380f293ac99900c79

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