Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1768cc4dc09808e…

MALICIOUS

PDF

37.7 KB Authoring application: Poppler-utils
MD5: f8069602c464815b7d77b81498ec4a94 SHA-1: 0b4a84d662babe71dc99ce11c941330f5c3cef8a SHA-256: e1768cc4dc09808eea55b5d65cd39514750003d3c1dcffe8975b9665f4fb8616
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links to external PDF documents, a technique often used for SEO manipulation or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body text is largely unreadable, but the presence of numerous external links is the primary indicator of the attack pattern.

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://www.nzmouldguidlines.org/uploads/1/3/0/7/130776174/doxozexemenitelup.pdf
    • http://bailbondsbuffalo.com/uploads/1/3/0/6/130640144/sisori.pdf
    • http://wesleyhooks.com/uploads/1/3/0/6/130603931/kakobivunisuvebovise.pdf
    • http://dadsdining.com/uploads/1/3/0/5/130590305/d276ef97aee2ef.pdf
    • http://newresume2019.com/uploads/1/3/0/3/130323207/puzujuk-joxim-pajime-majuwig.pdf
    • http://noetrophyproperty.com/uploads/1/3/0/2/130273735/061b5bd1b58.pdf
    • http://campdogdesign.com/uploads/1/3/0/8/130874046/desudawame-dewofaveko.pdf
    • http://litigatingforchange.org/uploads/1/3/0/5/130539718/fifafoworo.pdf
    • http://tocahairsalon2.com/uploads/1/3/0/4/130483961/bujidivilotazeba.pdf
    • http://thelookoutapartments.com/uploads/1/3/0/3/130323332/1036504.pdf
    • http://prathamut.org/uploads/1/3/0/3/130323190/326154.pdf
    • http://www.start-base.com/uploads/1/3/0/4/130483191/bufirumat.pdf
    • http://homesforsalesearch.com/uploads/1/3/0/6/130621642/dutavipa_divef_savijib_kigejewidagir.pdf
    • http://nationalchristmasgreetings.com/uploads/1/3/0/3/130313140/4480321.pdf
    • http://drgnzombiestournament.com/uploads/1/3/0/7/130775434/sonirufirotigi_xukeremita.pdf
    • http://treeservicechulavista.com/uploads/1/3/0/4/130476158/devefizobosakeb.pdf
    • http://madisondigital.net/uploads/1/3/0/7/130739640/mumitinu_solezakulawifus_sevomag.pdf
    • http://rawblends.com/uploads/1/3/0/4/130435982/lusawolani-wobeg.pdf
    • http://74-123-72-236.mgwnet.com/uploads/1/3/0/7/130738786/130738786.html#compare+and+contrast+the+abiotic+and+biotic+factors+of+an+ecosystem
    • http://drgnzombiestournament.com/uploads/1/3/0/7/130775434/so

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000350e.bin
6b579bf1d9c26a1c58453d4fe7285f16b9737a0f6b4416d9662cf09089b50100		 pdf-font-stream PDF embedded font (sfnt) at offset 0x350E 8116 bytes

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