Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c8b7d374d57cc49…

MALICIOUS

PDF

59.0 KB Authoring application: Mobipocket Creator First seen: 2020-09-24
MD5: 76c6ff7ecbc0138cd7fb4144974128b3 SHA-1: e9b15aca61ff69b82c7cb97a2f90ccd690b72329 SHA-256: 1c8b7d374d57cc497b3d4e59c1c4059071eeea0e126cbceda819741aa519e9ad
212 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link farm designed to lure users to download other PDF files, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. The document body mentions 'Umbrella academy comics pdf', suggesting a phishing or scam lure. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing intent. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector http://stuckeymedia.weebly.com/uploads/1/3/0/5/130545882/jukewosakax.pdf.
  • 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://kurdistantours.net/uploads/1/3/0/2/130289304/6991238.pdf In PDF document text
    • http://quiltwithleslie.com/uploads/1/3/0/6/130640047/wusiwute.pdfIn PDF document text
    • http://stuckeymedia.weebly.com/uploads/1/3/0/5/130545882/jukewosakax.pdfIn PDF document text
    • http://newsouthrecordsllc.com/uploads/1/3/0/5/130590535/6142680.pdfIn PDF document text
    • http://tbc.group/uploads/1/3/0/5/130547450/6372059.pdfIn PDF document text
    • http://nailsbymargaret.com/uploads/1/3/0/5/130590561/fonegapu.pdfIn PDF document text
    • http://thatframingplace.com.au/uploads/1/3/0/4/130436172/d3af4e00f.pdfIn PDF document text
    • http://mhentscheldesigns.com/uploads/1/3/0/7/130738531/pufolefuxufol-bixivejegetemak.pdfIn PDF document text
    • http://drpatty.net/uploads/1/3/0/6/130604090/130604090.html#umbrella+academy+comics+pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 4

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000ff8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF8 9960 bytes
SHA-256: ad79ed359599f1c322758cfd8e8005fc2aa3c5967ac5daed10cfceb1d36bc14a
font_01_sfnt_off00009e3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E3A 16948 bytes
SHA-256: 69d97790058d56d5ea0950134484cf7882a985307aa1ac00327daeba9abf1629

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