Malicious PDF — malware analysis report

Static analysis result for SHA-256 75211ca01f7ffa32…

MALICIOUS

PDF

36.9 KB Created: 2020-04-04 08:11:26 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-08-25
MD5: df9fb469db9c734be0239d70265e2d2d SHA-1: 205102ef66339fff6da10c9ab451e899add77747 SHA-256: 75211ca01f7ffa320261f31158a6bd9d3c10f92b1b77e1caa1a2edf096445d3b
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file exhibits characteristics of a link farm or SEO spam, embedding a large number of external URLs. The ML classifier strongly indicates maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of numerous external links, suggesting a potential distribution or redirection mechanism. No scripts were extracted, but the sheer volume of outbound links points towards an attempt to drive traffic to potentially malicious or deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://togglesbottles.com/uploads/1/3/0/4/130477293/130477293.html#fundicion+en+molde+permanente+por+gravedad PDF link annotation
    • http://bkgroupbenefits.com/uploads/1/3/0/8/130813416/fedomobami.pdfIn PDF document text
    • http://taitonstouchjewelry.com/uploads/1/3/0/7/130738831/tisofuxamimozotugogi.pdfIn PDF document text
    • http://kylesj.com/uploads/1/3/0/6/130621511/0cf77f1.pdfIn PDF document text
    • http://solutionxpertconsultants.com/uploads/1/3/0/8/130814631/1f4e39f1.pdfIn PDF document text
    • http://takeatriprentals.com/uploads/1/3/0/2/130271028/nagazazuzow_jarelafid_ponix_widinamaweno.pdfIn PDF document text
    • http://passmankade.com/uploads/1/3/0/3/130324027/xudixum_susuruk_pufuw.pdfIn PDF document text
    • http://testlively.com/uploads/1/3/0/7/130740073/togax-rizadezezekug-zovasidulevob-tiguko.pdfIn PDF document text
    • http://schoolofbeatbox.net/uploads/1/3/0/6/130621686/sotekurifevi.pdfIn PDF document text
    • http://sugarheal.com/uploads/1/3/0/4/130483817/buzel-mujewafiraloz-wuvivib-newevuledowus.pdfIn PDF document text
    • http://dna-testi.net/uploads/1/3/0/2/130289218/12aa7044e22.pdfIn PDF document text
    • http://selinapeason.com/uploads/1/3/0/4/130488583/fekurepe.pdfIn PDF document text
    • http://rainboascales.com/uploads/1/3/0/5/130589054/nuvilitavumu.pdfIn PDF document text
    • http://giendesign.com/uploads/1/3/0/9/130969686/jemopiser.pdfIn PDF document text
    • http://sebastiangardner.com/uploads/1/3/0/6/130604093/450754.pdfIn PDF document text
    • http://lauranozicka.com/uploads/1/3/0/4/130435738/8586634.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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67DA 7800 bytes
SHA-256: 7383c2a7849f111ae004a02868e6743dde596ecce06bc53d9044064b1ec9ccef