Malicious PDF — malware analysis report

Static analysis result for SHA-256 059629a44af3eeb5…

MALICIOUS

PDF

79.8 KB Created: 2021-10-13 01:22:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 8802300f44e8f39475246249786b713c SHA-1: e1298783588a21ee5f50993e31c4fda4913e7a82 SHA-256: 059629a44af3eeb56dba4e2f8b66b9608073a90c56dafe54073948c4747c1df3
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous external links, with many pointing to unknown or potentially malicious domains, suggesting a phishing or redirection scheme. The presence of PDF-specific heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports the conclusion that this document is part of a malicious campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://sacoorhealth.pt/site/upload/file/63000352906.pdf In PDF document text
    • http://phamtrangia.com/upload/files/zenakubumune.pdfIn PDF document text
    • http://maslag.eu/userfiles/file/ketefedusoniwunufowifinit.pdfIn PDF document text
    • https://posh.hr/files/zunusobiwujegazobivu.pdfIn PDF document text
    • https://weborder.cloud/userfiles/file///kimesepu.pdfIn PDF document text
    • http://biometria.pl/photos_fck/file/zirevejufat.pdfIn PDF document text
    • https://planet-pvc.com/upload/files/wemerapurinumazenokufotuv.pdfIn PDF document text
    • http://leylatoprak.com/userfiles/file/20510545348.pdfIn PDF document text
    • http://www.aceitunasdelguadalhorce.es/ckfinder/userfiles/files/45887186840.pdfIn PDF document text
    • http://geerhannutpourreussir.be/docs/upload/files/22456427258.pdfIn PDF document text
    • http://xn----ftbkdcamitb5h.xn--p1acf/files/fck/file/ruvunip.pdfIn PDF document text
    • http://vattuxaydunghl.com/userfiles/file/jofize.pdfIn PDF document text
    • http://luatsugiadinhviet.com/upload/ck/files/wivozuzejikojufuramol.pdfIn PDF document text
    • http://www.agot.pl/upload/file/kawupirifutiwosifeke.pdfIn PDF document text
    • https://ukmalayalamnews.com/userfiles/file/tefozikukim.pdfIn PDF document text
    • http://gfzgt.ch/upload/file/35421336060.pdfIn PDF document text
    • https://dm288.com/slicice/file/48345986582.pdfIn PDF document text
    • https://zooiguana.pl/app/webroot/media/files/vewotefemexar.pdfIn PDF document text
    • http://ty-universe.com/image/files/20210903_133656.pdfIn PDF document text
    • http://myshiou.com/uploads/files/202109030501545158.pdfIn PDF document text
    • https://dongcohonda.com/userfiles/file/18926303723.pdfIn PDF document text
    • http://watthaistuttgart.de/userfiles/file/46571125697.pdfIn PDF document text
    • https://superlitefan.com/uploads/files/8984104767.pdfIn PDF document text
    • https://vrindaindia.com/php/joseph/uploads/file/94645022710.pdfIn PDF document text
    • https://kimcert.com/E/file/gusupomogat.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/7xhmvLXWVJc/uplcv?utm_term=different+types+of+short+poemsPDF link annotation
    • https://bep.semmelweis.hu/userfiles/file/80955063888.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d345.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD345 10528 bytes
SHA-256: 9834200ff277a0271e541671759f1832beb83b802eac60737064fa59598711dc
font_01_sfnt_off0000eb18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB18 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001032a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1032A 17812 bytes
SHA-256: 07e5ca7b930826a0ee1c2897f6ba6eeaf376c4378d953b61ad4e9da3c2de060d

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