Malicious PDF — malware analysis report

Static analysis result for SHA-256 81119ee1968f685f…

MALICIOUS

PDF

34.3 KB Authoring application: Mobipocket Creator
MD5: b10bce2e6ca129dd0846076f4d3b6b14 SHA-1: dd5f3ad9b69eec72c278d54e233fa351d1b92f7e SHA-256: 81119ee1968f685fe56254b4cd7b57614665df0bbd0e0e24fac57412b4d77bdd
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical alert for a link farm and a machine learning classifier indicating maliciousness. ClamAV also identified it as Pdf.Phishing.TtraffRobotInstall. The embedded URLs suggest a phishing or SEO poisoning attack, where the document serves as a lure to redirect users to potentially malicious content hosted on numerous domains. No scripts were extracted, limiting the analysis of direct execution behavior.

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://artichokesociety.org/uploads/1/3/0/5/130545698/0a7fed4fac6030.pdf
    • http://beyondcleanmaids.ca/uploads/1/3/0/6/130603696/5841796.pdf
    • http://mountain-ammo.com/uploads/1/3/0/6/130622083/210099.pdf
    • http://thepowerofthetable.net/uploads/1/3/0/2/130272580/kavil.pdf
    • http://sweetgrassya.org/uploads/1/3/0/4/130483194/beperekuta_zuwaz_lefef_zikolesewalaro.pdf
    • http://kreativejeanius.org/uploads/1/3/0/3/130313027/xugowodapoze.pdf
    • http://jeanroyer.net/uploads/2020/01/28/2561972.pdf
    • http://fapo.etg-store.com/uploads/2020/01/28/5721475.pdf
    • http://babiesbreath.com.au/uploads/1/3/0/6/130604151/576dc7632.pdf
    • http://nashvilleperformancepsych.net/uploads/1/3/0/5/130590779/satugo_vibod_pirif.pdf
    • http://plebmc.net/uploads/1/3/0/6/130604543/xazekogunoroburukelu.pdf
    • http://tntnyc.weebly.com/uploads/1/3/0/6/130604307/34cfb30d9.pdf
    • http://davesbackyardbees.com/uploads/1/3/0/6/130621654/gipup-buteropij-poperogupax.pdf
    • http://riniduju.220602shopsss08.fun/uploads/2020/01/27/niwedarerugid-gefonesuxujuten-gibilaka-kolifowonima.pdf
    • http://blueeyesandbarefeet.com/uploads/1/3/0/4/130483748/a80e8.pdf
    • http://oatbardicschool.org/uploads/1/3/0/3/130312952/sodubevuxur_mevudukadu_donadisenu.pdf
    • http://zumisoxujo.dmdmassage.com/uploads/2020/01/28/41960c85c43e77.pdf
    • http://mgservicios.net/uploads/1/3/0/5/130588162/vutedo.pdf
    • http://rightjoin.com/uploads/1/3/0/4/130489051/4711727.pdf
    • http://krdesigns21.com/uploads/1/3/0/4/130488924/nineze.pdf
    • http://miracleinabucket.com/uploads/1/3/0/4/130475981/130475981.html#confucianism+legalism+daoism+worksheet

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000015f7.bin
3d48403ebb34595ff12737a123270ceeb518c20dfd7d52c3f7ba70b816894f78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15F7 7764 bytes

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