Malicious PDF — malware analysis report

Static analysis result for SHA-256 8af187e8bcce2f97…

MALICIOUS

PDF

34.4 KB Authoring application: QPDF
MD5: e78a9f4332c5e754de332b01b6330beb SHA-1: 2d74f2c16d3e36205c4a76bfdb36d920989670e9 SHA-256: 8af187e8bcce2f973fb92584b939104aaa586cebb90e3e426e5e300efd1f8658
152 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier also strongly suggest maliciousness. The primary attack pattern appears to be SEO manipulation or directing users to a malicious site through a link farm, with the first identified URL being http://bibamate.com/uploads/1/3/0/4/130489044/aad3f4.pdf.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://bibamate.com/uploads/1/3/0/4/130489044/aad3f4.pdf
    • http://www.toyguyomaha.com/uploads/1/3/0/7/130739824/b9a165d7d2a78.pdf
    • http://msmohp.org/uploads/1/3/0/4/130435721/fedddbe6101.pdf
    • http://neobyapps.com/uploads/1/3/0/7/130775355/pikonusub.pdf
    • http://thestockmarketrecap.net/uploads/1/3/0/4/130478819/440490ec27.pdf
    • http://abodyindulgence.com/uploads/1/3/0/8/130813381/fajoperomadow.pdf
    • http://sloaneswayze.com/uploads/1/3/0/7/130775796/ruzutowozegefuwo.pdf
    • http://marijuanalawvt.net/uploads/1/3/0/5/130540009/6107399.pdf
    • http://www.buyandsellwithsaraedwards.com/uploads/1/3/0/7/130740374/gupalet.pdf
    • http://www.onlytherealest.us/uploads/1/3/0/7/130775970/6060855.pdf
    • http://peppertide.net/uploads/1/3/0/2/130287246/babogedizalali-finijoxuxe.pdf
    • http://standwithpuertori.co/uploads/1/3/0/7/130740627/tojifugavan.pdf
    • http://mlotero.net/uploads/1/3/0/6/130620919/kanazuborusope.pdf
    • http://christmaswishesbook.com/uploads/1/3/0/5/130539188/4b71e5fa.pdf
    • http://richardbrull.com/uploads/1/3/0/4/130489742/130489742.html#foreign+phrases+used+in+english+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e69.bin
6253613ecf5f1526166e8f80ce89f59a2793a74be2bfd95bc4603d12310ad2a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E69 7284 bytes

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