Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d3c83f90ef1db68…

MALICIOUS

PDF

46.0 KB Authoring application: Mobipocket Creator
MD5: e53b3bfc65cbc2021d109e2651afbcef SHA-1: a325445b4128ae8e702b62f27dbdf27482e9af3e SHA-256: 0d3c83f90ef1db68e8ccfc59cdcd5731888d9feefd3795193600030b0e2130a6
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a mass external link farm, with 31 links pointing to other PDF files. This is indicative of SEO manipulation or a phishing campaign distributing malicious content. The ML classifier and ClamAV detection strongly support its malicious nature. No scripts were extracted, and the document body was heavily obfuscated and truncated.

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.parentrecoverycoach.thechilitrail.com/uploads/1/3/0/4/130436181/weverofur-dodedo-jogom.pdf
    • http://mychicagorides.com/uploads/1/3/0/6/130640006/rufez.pdf
    • http://blogdeviajes.net/uploads/1/3/0/6/130620435/susovukuwupudugenufo.pdf
    • http://invitationtolive.com/uploads/1/3/0/4/130483703/bufibuvumirulu.pdf
    • http://changemakersbusinessacademy.com/uploads/1/3/0/7/130776872/b22bad6b.pdf
    • http://hostmaster.sdivn.com/uploads/1/3/0/4/130483087/5274449.pdf
    • http://www.docreditcard.com/uploads/1/3/0/5/130551599/welotiwizulobojidu.pdf
    • http://roofing-sunderland.co.uk/uploads/1/3/0/9/130969026/majugukedijabupo.pdf
    • http://fpcollectibles.com/uploads/1/3/0/6/130621874/rologof.pdf
    • http://creativetrekkie.com/uploads/1/3/0/7/130776808/6803426.pdf
    • http://shannonbrownactor.two9productions.com/uploads/1/3/0/2/130270966/40f0d780ad.pdf
    • http://troop115.com/uploads/1/3/0/7/130740015/dibukibivuposirasadu.pdf
    • http://aiafricatravel.co.za/uploads/1/3/0/8/130813738/75540f2.pdf
    • http://mrglows.com/uploads/1/3/0/2/130289577/xababagoxuji.pdf
    • http://onecityhistoricalfoundation.com/uploads/1/3/0/7/130740242/dab2958a54dcd69.pdf
    • http://nealwendt.com/uploads/1/3/0/7/130738499/4170734.pdf
    • http://thelastpageontheinternet.com/uploads/1/3/0/4/130476395/11509159.pdf
    • http://cpanel.made-by-nature.be/uploads/1/3/0/7/130738758/1146995.pdf
    • http://defenselogisticsalternatives.com/uploads/1/3/0/3/130379361/bezufajeko_lokivixamoje.pdf
    • http://chloepictures.com/uploads/1/3/0/6/130604090/nurezaxupap_zupuwu_wonanusapogari_xezov.pdf
    • http://chantelleshaw.com/uploads/1/3/0/7/130776503/sivaguxuxepura.pdf
    • http://mrmacbiblebook2.com/uploads/1/3/0/2/130272600/130272600.html#dairy+wastewater+treatment+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000535a.bin
ec7f0088d296bb910272e8d437ede066f56b0dfc56650de395f22bbca2a6fefd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x535A 8164 bytes

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