Malicious PDF — malware analysis report

Static analysis result for SHA-256 c83b6b0c11fe2a47…

MALICIOUS

PDF

48.0 KB Authoring application: Poppler-utils
MD5: 75f83533d8f2cbd6fb45b360ee6e8ba6 SHA-1: e70386123b28575f4eb6b8fc23bc674e98487b9e SHA-256: c83b6b0c11fe2a478c51865f61a867cbcc4ffb0200427a97a9b00195a97a0fa9
128 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to other PDF files, indicating a link farm designed for SEO manipulation or phishing. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' strongly suggests a phishing or traffic redirection campaign. The presence of a visual download button further supports the lure-based attack pattern.

Heuristics 4

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://priyagandhi.net/uploads/1/3/0/5/130551890/wenejujosogap_loleso_fakevupo_fokanaroj.pdf
    • http://phytocapital.com/uploads/1/3/0/6/130639349/8059560.pdf
    • http://nhca-lions.org/uploads/1/3/0/5/130551019/4a0f83140e.pdf
    • http://afterall-this.com/uploads/1/3/0/5/130548070/8161876.pdf
    • http://sevoparis.fr/uploads/1/3/0/5/130551335/2562008.pdf
    • http://gpisgroup.com/uploads/1/3/0/5/130590096/gutotu_rugoliwuv_kukinorulobasi.pdf
    • http://freedomflow.ru/uploads/2020/01/28/97d18fd22.pdf
    • http://milescan.com/uploads/1/3/0/5/130552106/994637.pdf
    • https://kexukara.weebly.com/uploads/1/3/0/6/130603803/e651d.pdf
    • http://benkregel.com/uploads/1/3/0/4/130483649/130483649.html#joanne+fluke%27+s+lake+eden+cookbook+pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001271.bin
3104ff3ff606ae543f378fd8d26a777e4a310d123c6cfbf7e28942eb15d7f5f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1271 9308 bytes
font_01_sfnt_off000073e4.bin
23df611c204fcacea0cb1a1bd4777a81db0301add4d2a86387d9b428d0dd637c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73E4 16648 bytes

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