Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a9a81859ecd5d8a…

MALICIOUS

PDF

38.3 KB Authoring application: OpenOffice.org
MD5: 97738f397bffccd5cf318fc0256c5214 SHA-1: 31e60d09983c2b13d7f1f427a39d46d1594d3fcd SHA-256: 2a9a81859ecd5d8af979ddb1a5727f6f9d09b853855fddbdc35a71f84133b134
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO spam or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body, though heavily corrupted, contains text related to economic systems, which may be a lure.

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://pinecrestprintingstore.com/uploads/1/3/0/7/130775214/jobib.pdf
    • http://accstl.net/uploads/1/3/0/7/130776196/fakavorawukuk_vavupokuji_jaripox_zixadoxiweka.pdf
    • http://compsitesurveying.com/uploads/1/3/0/7/130738497/fojev-rejopavu-muvatidir-depalazejujen.pdf
    • http://mpenigeria.com/uploads/1/3/0/5/130588270/kijuxunawojatexi.pdf
    • http://growthhackingfunnel.com/uploads/1/3/0/3/130323811/virimibunonikurepipu.pdf
    • http://desatascosbarcelona.org/uploads/1/3/0/2/130287445/1292674.pdf
    • http://schmittsanimalhospital.net/uploads/1/3/0/2/130272319/xogufilomusi-rigajivixoxafex-soxaxifufes.pdf
    • http://nataliamcabrera.com/uploads/1/3/0/6/130620244/toketisatikuwam_suxilutemiwivag_vosuketogi.pdf
    • http://battlebuilding.com/uploads/1/3/0/8/130815008/3823582.pdf
    • http://sealavienj.com/uploads/1/3/0/6/130621965/divan_zisuziwiw.pdf
    • http://monkeywalldecals.net/uploads/1/3/0/3/130313289/xutipevavijex.pdf
    • http://dogsandbubbles.com/uploads/1/3/0/5/130589316/tilufekakikadusi.pdf
    • http://stillwaterfiretower.com/uploads/1/3/0/8/130813453/74267.pdf
    • http://www.skintherapystudioleesburg.com/uploads/1/3/0/6/130620645/4959007.pdf
    • http://www.feloniesunited.org/uploads/1/3/0/7/130739348/fibixenu-waviziv-linope.pdf
    • http://nau-systems.com/uploads/1/3/0/4/130477135/7689476.pdf
    • http://aahardwood.com/uploads/1/3/0/6/130639977/dafizewugalub-sazol-fetiv-nukolekepa.pdf
    • http://mothermedicina.com/uploads/1/3/0/6/130620234/lanesufefetox.pdf
    • http://www.utahdivorceadvisor.com/uploads/1/3/0/6/130639121/nudidowomasa.pdf
    • http://aninconvenientcommute.com/uploads/1/3/0/4/130489220/rafukadoxedi_runaliwabaron_daduvalutaro.pdf
    • http://webdisk.gammaxiques.org/uploads/1/3/0/4/130483350/130483350.html#3+diferencias+entre+el+sistema+capitalista+y+socialista

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000035ef.bin
01f0dcd93f3fc1acdf5676a7b7a8c5dbe8ad5f6e4d959468e5cceb94ecfcb9c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x35EF 8384 bytes

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