Malicious PDF — malware analysis report

Static analysis result for SHA-256 a73df01a8fad4f3a…

MALICIOUS

PDF

48.3 KB Authoring application: QPDF First seen: 2020-09-24
MD5: 00a52689e752e0474a0ef6d10b994073 SHA-1: f72b88a652079afa59f40cadc0097bf515d38c0b SHA-256: a73df01a8fad4f3aece971c2f74e33eb00f3b4b6a0ccfbcbb9294810ab846f5e
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files hosted on various domains, indicating a link farm or distribution mechanism. ClamAV identified this as Pdf.Phishing.TtraffRobotInstall-7605656-0, and ML classification strongly supports maliciousness. The document body text is heavily obfuscated and does not provide clear intent, but the heuristic firings and numerous external URLs point to a phishing or SEO manipulation scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 3

  • 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.
  • 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://www.simplydeliciousdiva.com/uploads/1/3/0/6/130605471/4e0f3a15b3.pdf In PDF document text
    • http://megjia.com/uploads/1/3/0/7/130775551/682633829.pdfIn PDF document text
    • http://organizedgaming.net/uploads/1/3/0/7/130775922/2163732.pdfIn PDF document text
    • http://princeofbarkness.com/uploads/1/3/0/7/130775843/gafigive.pdfIn PDF document text
    • http://www.hand-brainlab.org/uploads/1/3/0/6/130640123/4ab80916c01af1.pdfIn PDF document text
    • http://bethewen.co.uk/uploads/1/3/0/6/130621228/tazunu-baxidejuvesodi.pdfIn PDF document text
    • http://michaeltaylorwrites.com/uploads/1/3/0/7/130776336/miriripixep_wuvanaxazudubum.pdfIn PDF document text
    • http://shadowofvenus.org/uploads/1/3/0/6/130639600/ruvar.pdfIn PDF document text
    • http://bakktchain.com/uploads/1/3/0/8/130814234/3976887.pdfIn PDF document text
    • http://networkmarketingmalaysia.com/uploads/1/3/0/5/130543029/xanavulumenera.pdfIn PDF document text
    • http://whattimeisitinchina.com/uploads/1/3/0/6/130639081/b57b60.pdfIn PDF document text
    • http://firesprink.org/uploads/1/3/0/4/130483492/gosexepux-ziwuwu-bamarate.pdfIn PDF document text
    • http://goshoppinghere.com/uploads/1/3/0/5/130588657/6561e71e.pdfIn PDF document text
    • http://katmoranpublications.com/uploads/1/3/0/3/130323302/rubasuvamotufol.pdfIn PDF document text
    • http://www.mayatcrawford.com/uploads/1/3/0/4/130476519/lusoma.pdfIn PDF document text
    • http://msr2mng.com/uploads/1/3/0/4/130488969/timikekek-molevapikevan-xolugowi.pdfIn PDF document text
    • http://pierviewcoffee.net/uploads/1/3/0/9/130969358/pizujilegot_nogenerel_nejida_guviv.pdfIn PDF document text
    • http://angie.vintageshittoget.com/uploads/1/3/0/4/130483193/dozoluxebokeni.pdfIn PDF document text
    • http://morganstermiteandpest.com/uploads/1/3/0/2/130289365/fofaga_nudesakabogeb.pdfIn PDF document text
    • http://swappingipadsforchickens.com/uploads/1/3/0/4/130483745/6042456.pdfIn PDF document text
    • http://simplybiblestories.net/uploads/1/3/0/7/130775876/gidedalejepeti_donani.pdfIn PDF document text
    • http://mirasolrehab.net/uploads/1/3/0/6/130620263/fe7a3e87ccda47.pdfIn PDF document text
    • http://mirigubler.com/uploads/1/3/0/6/130639690/b33f46.pdfIn PDF document text
    • http://www.firstclasscouriers.net/uploads/1/3/0/6/130640095/ae90f356401.pdfIn PDF document text
    • http://c0171196xstreamtravel.xsideas.com/uploads/1/3/0/5/130539783/130539783.html#typhoid+vaccine+childrenIn 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_off00003fdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3FDD 16160 bytes
SHA-256: bcf5fc35ddfcf873f1ad2ef0ea8a6b5ccdc8b53ee4b4aa86e6d38efd202e7288
font_01_sfnt_off000057d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57D7 8540 bytes
SHA-256: f1160769ddeb92639dce7b9fd5b922248a17df04b66db697bebe79df43e1ca2c

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