Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d8a099cdec28656…

MALICIOUS

PDF

42.4 KB Authoring application: OpenOffice Draw
MD5: ae4af4dfa6572c7b47094ebdf2856cc2 SHA-1: 79e2c9addc19ec89f9c2a6717ce7e67baf9fb486 SHA-256: 7d8a099cdec2865668af79c453d16fb462ce04a6d4051d672f63830e19bff75b
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file was flagged by multiple heuristics, including a critical PDF_SEO_LINK_FARM rule and ClamAV detection as Pdf.Phishing.TtraffRobotInstall. The presence of 22 embedded external PDF links, many hosted on seemingly unrelated domains, strongly suggests a phishing or traffic-driving campaign. The ML classifier also returned a high confidence score for maliciousness. No scripts were extracted from this sample.

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://daytonarescuemission.org/uploads/1/3/0/4/130488165/9226531.pdf
    • http://terrapin-llc.com/uploads/1/3/0/6/130622104/ludorinaku.pdf
    • http://odazzitclub.com/uploads/1/3/0/3/130323253/4128558.pdf
    • http://bestofthemenu.com/uploads/1/3/0/7/130775214/vubuxolojejogog.pdf
    • http://farmlawyer.com/uploads/1/3/0/5/130551231/8759685.pdf
    • http://deas-guyz.com/uploads/1/3/0/2/130271161/kojogavorexava.pdf
    • http://www.fatcityrocks.com/uploads/1/3/0/5/130538902/gijazuvimijeva.pdf
    • http://urbanfreshfarms.biz/uploads/1/3/0/8/130814003/sinamunigo-lojumeju-balivumivev.pdf
    • http://liquidbluesrq.com/uploads/1/3/0/8/130814258/lumamivirinevu.pdf
    • http://mail.seeplh.com/uploads/1/3/0/2/130272420/dewuguwobem.pdf
    • http://phonetac.com/uploads/1/3/0/2/130271132/sapuzef.pdf
    • http://airoparkourfreerun.com/uploads/1/3/0/6/130639362/lovenogewusal.pdf
    • http://austinturley.co/uploads/1/3/0/5/130550660/6703355.pdf
    • http://jolyongray.net/uploads/1/3/0/6/130639282/jizijavubujajov_bukoniz.pdf
    • http://www.slowlifedoc.com/uploads/1/3/0/4/130488861/miluzolilu.pdf
    • http://memoriesforever.voyagerwebsites.com/uploads/1/3/0/3/130323585/6071577.pdf
    • http://filter1.santaclarahighschool.com/uploads/1/3/0/5/130539414/666f6768f05fd9f.pdf
    • http://westernsierratelecom.com/uploads/1/3/0/9/130969701/nugoropebino.pdf
    • http://www.flygirldistrict.com/uploads/1/3/0/4/130483986/5869b9474977.pdf
    • http://nachomamanc.com/uploads/1/3/0/2/130272586/6338e845db75e.pdf
    • http://musicenvironment.com/uploads/1/3/0/7/130738507/guduw.pdf
    • http://adultaspect.org/uploads/1/3/0/9/130969089/julelabuluni_rapixexodake_kiledo.pdf
    • http://mta-sts.mx.guestcaboose.com/uploads/1/3/0/6/130605381/130605381.html#joshua+heschel+the+sabbath

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000045a4.bin
1083ecd7f2725b3eb1822c542c739e8c2c3106eb659cb5f5a168f5fff5371068		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45A4 7704 bytes

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