Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1abb5367a7d8d4c…

MALICIOUS

PDF

67.3 KB Authoring application: Inkscape
MD5: 182b69df1ebafb66d64cd7421ea4904a SHA-1: be85372f587753e56b49cf466b4fbcc8ba922ed7 SHA-256: d1abb5367a7d8d4ccab586fbc74255d9f2824f4dac280104bbf606b45ae71023
150 Risk Score

Malware Insights

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

The PDF file contains a large number of external links to other PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly indicate malicious intent. The embedded URLs are the primary indicators of compromise, suggesting a campaign to drive traffic to these external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://joyceolsonessentials.com/uploads/1/3/0/5/130547613/laturaziveradijak.pdf
    • http://lifeartfashionmusic.com/uploads/1/3/0/5/130539758/zisojem_fekesusewusex_gukug_xolakeg.pdf
    • http://fwcounseling.com/uploads/1/3/0/8/130873740/8747941.pdf
    • http://store.fastinfofinder.com/uploads/1/3/0/5/130539843/wojovig.pdf
    • http://rockymountaincadence.com/uploads/1/3/0/8/130813642/wuzutijalode_fobofasuze.pdf
    • http://maryleekemper.com/uploads/1/3/0/5/130550881/sulazu.pdf
    • http://stavangerfitness.com/uploads/1/3/0/4/130435635/jomogufiru.pdf
    • http://www.sacramentocatree.com/uploads/1/3/0/5/130589126/fagejazokukupitukad.pdf
    • http://mesastreetmercantile.com/uploads/1/3/0/6/130605349/3273493.pdf
    • http://thejeweledcollectionshop.com/uploads/1/3/0/6/130604250/561afa5d2deb3.pdf
    • http://houstonsteinway.net/uploads/1/3/0/5/130588443/lukekuwutukod.pdf
    • http://mypsyblogonline.com/uploads/1/3/0/6/130604741/991697.pdf
    • http://defense-elec-corp.com/uploads/1/3/0/7/130776645/1180446.pdf
    • http://bayook.com/uploads/1/3/0/2/130270740/7712467.pdf
    • http://ywpu2.slpny.com/uploads/1/3/0/8/130815311/130815311.html#adjetivos+calificativos+lista+pdf

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008157.bin
11eff0542ee112a7a4f3d5fa86892f13f7f7c80edb17354215cea33bb7714487		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8157 2768 bytes
font_01_sfnt_off00008b28.bin
b9a12d0ebc1937d4ffe8621ed61d688faa4e48efa743a253df1f2d72fb67bd27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B28 17688 bytes
font_02_sfnt_off0000a923.bin
28e751b8d566611874411beea19d2a164d56d50f0219839808ab6a8c4faebd81		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA923 10704 bytes

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