Malicious PDF — malware analysis report

Static analysis result for SHA-256 a88aef7ac0a4ed03…

MALICIOUS

PDF

33.4 KB Authoring application: Solid Converter PDF
MD5: 9b173bdd7afdb291a16f82b4718dfa6a SHA-1: 853cecc70ff97856d6d9b8893240c94fddd27c79 SHA-256: a88aef7ac0a4ed03563221b3347824b98622aa1a7642779590e243e6bd8bfc45
150 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. These links point to other PDF files hosted on various domains, suggesting a redirection or phishing campaign. The ML classifier and ClamAV detection further support its malicious nature. No scripts were extracted, and the document body is heavily corrupted, making it difficult to ascertain a specific lure beyond the link farm.

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://leadershipliturgy.com/uploads/1/3/0/5/130543878/xalupurominiz.pdf
    • http://gdcmetwash.com/uploads/1/3/0/6/130639269/kafexej-kaletij-valudikagi-kusatefimizaxuf.pdf
    • http://sagensparrow.com/uploads/1/3/0/7/130739627/sibaf.pdf
    • http://8ii8.us/uploads/1/3/0/7/130775766/095ea.pdf
    • http://1017bud.com/uploads/1/3/0/5/130588333/8718176.pdf
    • http://liveinemail.net/uploads/1/3/0/4/130435670/4050925.pdf
    • http://emilyguild.com/uploads/1/3/0/8/130873902/wekesokif.pdf
    • http://www.thelastblankever.com/uploads/1/3/0/2/130272616/xidesoreminuru.pdf
    • http://cagedchicken.com/uploads/1/3/0/7/130774972/1057516.pdf
    • http://opus48choir.com/uploads/1/3/0/6/130604427/lutewikanolom_luwapevu.pdf
    • http://www.independentadvizor.com/uploads/1/3/0/5/130551729/12c36d5.pdf
    • http://southaustinyoga.com/uploads/1/3/0/6/130604631/xoxan_narasafoze_kasinebuwimu.pdf
    • http://southlandgun.net/uploads/1/3/0/6/130621473/4d376fe0ec43.pdf
    • http://highspeedstaffingco.tech/uploads/1/3/0/7/130739129/nawodute-faduravugojale-kigorekebijisu.pdf
    • http://rek.se/uploads/1/3/0/5/130539913/joparivumerota.pdf
    • http://amstelkorendag.nl/uploads/1/3/0/7/130740080/xawox-vanigilulite.pdf
    • http://healthcareanalyticsmergers.com/uploads/1/3/0/2/130272084/mirogusezit_ramejetisezor.pdf
    • http://0kuyy.bpmtc.com/uploads/1/3/0/5/130550888/130550888.html#microsoft+dynamics+nav+2009+r2+web+services

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000257a.bin
107c2abc31c79b2d643623b695b13631a55de79be1d5468b1dae6457e5d44785		 pdf-font-stream PDF embedded font (sfnt) at offset 0x257A 7892 bytes

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