Malicious PDF — malware analysis report

Static analysis result for SHA-256 794cfd5c4e6947ee…

MALICIOUS

PDF

31.2 KB Authoring application: QPDF First seen: 2020-09-24
MD5: 874a2d5e2138ddca0278e278b7691862 SHA-1: 1e8938fdb55c5257ba15125627029c5353163ecf SHA-256: 794cfd5c4e6947ee60bba1464ff845e6b70d8f72b7f5f019685759a514db6515
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, identified as a 'link farm' by heuristics, suggesting a tactic to distribute malicious content or manipulate search engine results. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://royalsingalongparties.com/uploads/1/3/0/5/130546497/9318821.pdf In PDF document text
    • http://carolinapumpworks.com/uploads/1/3/0/4/130493143/6607334.pdfIn PDF document text
    • http://theego.org/uploads/1/3/0/4/130483114/jalaleme.pdfIn PDF document text
    • http://myeasystudy.com/uploads/1/3/0/2/130272280/8042534.pdfIn PDF document text
    • http://uniquetouchofsparkle.com/uploads/1/3/0/5/130539315/gusufesosiji-bezikuza-vifizuvudixezu.pdfIn PDF document text
    • http://rhinobullybook.com/uploads/1/3/0/2/130274258/b65b3eeb21e6571.pdfIn PDF document text
    • http://marytherapeuticmassage.com/uploads/1/3/0/2/130289748/gikob-fuxixolozuxal-morugi-rubaxiti.pdfIn PDF document text
    • http://paintingwithfriendsbw.com/uploads/1/3/0/5/130552017/goseziledimuzux.pdfIn PDF document text
    • http://ubaentertainment.com/uploads/1/3/0/4/130483086/4824631.pdfIn PDF document text
    • http://cookingclassatthotupolaresidence.com/uploads/1/3/0/6/130639180/sisikewapew.pdfIn PDF document text
    • http://mimariposadesigns.com/uploads/1/3/0/5/130590716/jowazedezuwo.pdfIn PDF document text
    • http://noyzguru.com/uploads/1/3/0/5/130546118/3997641.pdfIn PDF document text
    • http://adoptme.info/uploads/1/3/0/4/130483498/130483498.html#acrobat+professional+10In PDF document text

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001458.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1458 7640 bytes
SHA-256: 87f20c42553e4b69599061ffeb060e16969eb7fe92cce0ade801767d0597df14

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