Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1dc622c69bc7487…

MALICIOUS

PDF

32.1 KB Authoring application: PDF Studio
MD5: 233a1c147425e67e6e72d1a2ae54ff30 SHA-1: 5405aea2f0d90074d7f7aec27ce195199a330d94 SHA-256: e1dc622c69bc74876f7da344f861aa7845f3e39dc178d4b4fc3631453e2d67a9
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded external links, a technique commonly used for SEO poisoning or to redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the link farm suggests a delivery mechanism for further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://hwy1autotrucksequipment.com/uploads/1/3/0/6/130620407/vobasajipogupunibe.pdf
    • http://akademikreatifindonesia.com/uploads/1/3/0/7/130775455/5772428.pdf
    • http://travel-merit.com/uploads/1/3/0/6/130620651/rijowifasetuwit_nosimo_murulebek_dofazeno.pdf
    • http://www.bathroomfitter.org.uk/uploads/1/3/0/3/130312919/buvimawog.pdf
    • http://nathannasbymusic.com/uploads/1/3/0/7/130740000/412572.pdf
    • http://deeshomecookin.com/uploads/1/3/0/9/130969477/e375d1ee9.pdf
    • http://usagaslogs.com/uploads/1/3/0/5/130588164/6091128.pdf
    • http://thechatterbox17.com/uploads/1/3/0/6/130622077/zajum-zuboxu-gawososirojenus-weribapumonawi.pdf
    • http://franklincountystrong.com/uploads/1/3/0/5/130539344/1483114.pdf
    • http://www.worldelitesurgeons.com/uploads/1/3/0/5/130544090/gokujivufitanix_zuraxixoxipi_xifiruped_gedotato.pdf
    • http://mrk.live/uploads/1/3/0/6/130639162/fejovewukimaso-koxisosidisalej-faxalajotigobiz-regofulirexodom.pdf
    • http://kinsley-walker-p-1.rominastiebenphotography.com/uploads/1/3/0/7/130775422/130775422.html#blessed+assurance+hymn+lyrics

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000271e.bin
1c3186377e70de1de880e46b8bcecf94754e71b08019aa50d28e8fbd264f1d73		 pdf-font-stream PDF embedded font (sfnt) at offset 0x271E 7492 bytes

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