Malicious PDF — malware analysis report

Static analysis result for SHA-256 518d949a9fa03091…

MALICIOUS

PDF

42.4 KB Authoring application: Nitro PDF
MD5: 0ad861b356e11be88df49f10d3b5889e SHA-1: 5399266dde70eeb511e2f8a56a14d95b259b7ae9 SHA-256: 518d949a9fa0309184fc7d20befb5b3f1fd66aece2bc1ec9e9a285af1f94addb
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier also indicate maliciousness. The document body is heavily obfuscated and contains what appears to be junk data, suggesting the primary purpose is not to convey information to a user but to host or redirect to malicious content via the embedded URLs.

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.honorequip.net/uploads/1/3/0/7/130738821/9920962.pdf
    • http://miztcomedy.com/uploads/1/3/0/2/130287419/523f952fe25e.pdf
    • http://rennrenn.net/uploads/1/3/0/7/130739827/totori.pdf
    • http://missiontofarm.net/uploads/1/3/0/7/130739535/9061201.pdf
    • http://comparefoldersapp.com/uploads/1/3/0/7/130776760/5011558.pdf
    • http://msbrownsclassroom.com/uploads/1/3/0/5/130551567/5f35b4365ac032.pdf
    • http://mochaloops.com/uploads/1/3/0/5/130541271/d66d679498d.pdf
    • http://merakifarmacy.com/uploads/1/3/0/5/130539990/9870955.pdf
    • http://accountingformarijuana.com/uploads/1/3/0/5/130541904/dozusurex-wuxemevivexavu.pdf
    • http://nicolaseconomou.net/uploads/1/3/0/5/130588565/3263879849e3.pdf
    • http://morpheusgraphix.com/uploads/1/3/0/5/130589195/jodasi_runowufixir_jerinomisula_wipojifigevef.pdf
    • http://dcooley497.com/uploads/1/3/0/6/130605335/sedikuza_lugoli_zudafozamot.pdf
    • http://ritualcoffeebar.com/uploads/1/3/0/2/130289209/6022917.pdf
    • http://directordean.org/uploads/1/3/0/5/130544118/8081594.pdf
    • http://solemateshoerepair.com/uploads/1/3/0/7/130775466/nizeresiziboli.pdf
    • http://chartspanemployer.com/uploads/1/3/0/5/130589249/a218eff1237ad.pdf
    • http://cloud9weddingflowers.com/uploads/1/3/0/6/130639672/fowejax-fudab-tavaxaj.pdf
    • http://darkmediaguy.com/uploads/1/3/0/4/130436139/8855689.pdf
    • http://nikkileeyoga.com/uploads/1/3/0/2/130271094/07286bd3ee5b.pdf
    • http://sustainableob.com/uploads/1/3/0/5/130544889/firusoroti.pdf
    • http://www.grupoadi.com/uploads/1/3/0/2/130272291/9a7ef1932.pdf
    • http://theparksphysie.com/uploads/1/3/0/2/130272886/rituta_jobopo.pdf
    • http://nswminiaturepony.com.au/uploads/1/3/0/6/130620979/f528758912cb.pdf
    • http://m.geoffgoodsonhorsemanship.com/uploads/1/3/0/7/130739697/27774410a96c.pdf
    • http://pendulumhealing.com/uploads/1/3/0/7/130740533/wuluzadosatosof_vigonu_pakuga.pdf
    • http://862.bpmtc.com/uploads/1/3/0/2/130289630/130289630.html#cheat+gta+san+andreas+android+v+1.08
    • http://accountin

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004000.bin
c46b07b62d3e907d0f7f49e37e845f8c99b0851111d8e924450a97acfd22deb3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4000 8436 bytes

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