Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d379d89905af090…

MALICIOUS

PDF

35.9 KB Authoring application: Adobe PDF Library 9.0
MD5: d50dec83e0a2b201ebe6b24aa193f5d9 SHA-1: e78037620d18fb8c11fb50e226fd1ab5f56a981a SHA-256: 5d379d89905af09045ea49071d6d8a71c5b904353a77a3687dda747c4b8a0e6e
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links to other PDF files, masquerading as a document conversion tool. This heuristic, combined with ML classification and ClamAV detection, strongly suggests a phishing or malware distribution campaign. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent to redirect users to potentially harmful content.

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://wildfantasycat.com/uploads/1/3/0/5/130588426/rutefonas.pdf
    • http://carbonconstruction.net/uploads/1/3/0/8/130813784/2495760.pdf
    • http://mishadumois.com/uploads/1/3/0/6/130620898/abef704.pdf
    • http://uniqueznaturaltouch.org/uploads/1/3/0/6/130604257/921794.pdf
    • http://davidstgermainjr.com/uploads/1/3/0/9/130968926/mupet-lomegudabasivuv-sasike.pdf
    • http://queersf.net/uploads/1/3/0/4/130476587/920194.pdf
    • http://www.areyouveganyet.com/uploads/1/3/0/6/130620163/59310b3bc252fb.pdf
    • http://mountainofagents.com/uploads/1/3/0/5/130588762/3832293.pdf
    • http://redteam3.net/uploads/1/3/0/5/130538953/kejusanat.pdf
    • http://www.turnkeypropertyinspections.com/uploads/1/3/0/6/130621351/jabitiwadizudimakaka.pdf
    • http://www.greaterbluefieldcommunitycenter.com/uploads/1/3/0/4/130488539/fuzitat.pdf
    • http://quinnarcher.com/uploads/1/3/0/3/130379210/lafafosof.pdf
    • http://mrsbutlers4thgradeclass.com/uploads/1/3/0/5/130589345/1805561.pdf
    • http://www.thenurturedtouch.com/uploads/1/3/0/4/130478760/waniritubusajinasur.pdf
    • http://alt-davos.net/uploads/1/3/0/6/130605152/fopalutik_bududezutewad_ruxiwerumumusi_guvudekukenuwi.pdf
    • http://www.firstsipwithk.com/uploads/1/3/0/7/130775748/9872214.pdf
    • http://kalamazoodistilling.com/uploads/1/3/0/6/130621194/06156d2b.pdf
    • http://petersonchapelmbc.gammaxiques.org/uploads/1/3/0/5/130589268/130589268.html#convert+scan+copy+to+word+file

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fbb.bin
c96579bef924da07e3067537fefe449629b096abd91c68b0667d9e5f5d22f59c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FBB 7760 bytes

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