Malicious PDF — malware analysis report

Static analysis result for SHA-256 39d93783f65919b1…

MALICIOUS

PDF

41.6 KB Authoring application: Scribus
MD5: a4e339e66af9f87bc66a68bcec337a37 SHA-1: c9d14a31b850394d8cf1f7a3f2393cf76df0108b SHA-256: 39d93783f65919b1f6186d4d4b6abcb5f11ad832131644bc32055c0443904aa9
150 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF was flagged by multiple heuristics, including a critical finding for a large external link farm. The ClamAV detection indicates it is a phishing-related PDF. The embedded URLs are likely used to redirect users to malicious content or phishing pages. No scripts were extracted, limiting the ability to determine specific payload delivery mechanisms.

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://gemuza.labuenasemillabcn.com/uploads/2020/01/27/d6ee14f01ab.pdf
    • http://elizabethebrault.com/uploads/1/3/0/5/130540592/d41b48945451990.pdf
    • http://unitedkoreans.com/uploads/1/3/0/5/130590195/januxosag.pdf
    • http://goxode.dmdmassage.com/uploads/2020/01/27/gaxawosonolalavij.pdf
    • http://alebalieiro.cl/uploads/1/3/0/5/130550844/5605292.pdf
    • http://numal.smaph.ru/uploads/2020/01/28/ef44fdf8897f5aa.pdf
    • http://samguru26.ru/uploads/2020/01/29/5536729.pdf
    • https://gukafebufu.weebly.com/uploads/1/3/0/4/130489833/3910924.pdf
    • http://leaedgar.com/uploads/1/3/0/6/130604590/6290914.pdf
    • http://damiwuf.speacetech.us/uploads/2020/01/28/010f4d.pdf
    • https://tixogapoz.weebly.com/uploads/1/3/0/5/130588948/2323478ac154203.pdf
    • http://audrarosemusic.com/uploads/1/3/0/5/130588961/zepomopulazovugin.pdf
    • https://tajovabobusetov.weebly.com/uploads/1/3/0/2/130272233/jelotapifuvo_rapabopi_bivelevugitom_pudoromufolom.pdf
    • http://vkino.fun/uploads/2020/01/27/8984202.pdf
    • http://zudipujex.7gnomov.biz/uploads/2020/01/28/gexajebug.pdf
    • http://mebebapep.knapp-russia.com/uploads/2020/01/27/7754065.pdf
    • https://rubusaxenijipe.weebly.com/uploads/1/3/0/4/130483303/fakatutetemam-muvuzubunokex.pdf
    • http://ruzi.hercareer.pro/uploads/2020/01/27/6826713.pdf
    • http://matthewschwartz.org/uploads/1/3/0/4/130483385/130483385.html#arabiyah+baina+yadaik+pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000016b8.bin
5931cf92d24fbc710f8d59a28d9814376a956980fbb787a24ec19e3b39bf1edd
pdf-font-stream PDF embedded font (sfnt) at offset 0x16B8 8472 bytes
font_01_sfnt_off000057ab.bin
8636b3b481647fc04e6ebb861eb6f253509083d5003d6ba6524a8ef592492c7a
pdf-font-stream PDF embedded font (sfnt) at offset 0x57AB 17224 bytes