Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f1a310143c02d7f…

MALICIOUS

PDF

34.9 KB Authoring application: SWFTools
MD5: 363f733baddc261d28c619abc89f9cfd SHA-1: 33498cfbe8b9d40b0083d4d2a2b84f1526058554 SHA-256: 2f1a310143c02d7f0d25eec9eb1b4f60722d1f4f4d418afe511c46c2f5acba3b
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, identified as a 'PDF_SEO_LINK_FARM', with the primary URL pointing to a potential malware download. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious classification. The document body, though heavily obfuscated, contains phrases related to software downloads, reinforcing the lure. The embedded URLs are the highest priority IOCs for further investigation.

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://smpcreditrepair.org/uploads/1/3/0/5/130589400/5270261.pdf
    • http://mountainfestival.org/uploads/1/3/0/4/130477293/fafedo-tovek-pepimuxuw-pibubijiraw.pdf
    • http://egwrtjetggg.xyz/uploads/2020/01/28/nuxoxovet.pdf
    • https://tanosikeki.weebly.com/uploads/1/3/0/5/130542907/2278739.pdf
    • http://positiveenergyny.com/uploads/1/3/0/4/130435906/96e673d3.pdf
    • https://dajolojemuni.weebly.com/uploads/1/3/0/5/130547613/2b49fb47.pdf
    • http://alliancelawfirm.weebly.com/uploads/1/3/0/6/130605325/6774913.pdf
    • http://ageinmyplace.net/uploads/1/3/0/3/130313127/zukibiwadiropatelod.pdf
    • http://kozujego.lilosshop.com/uploads/2020/01/27/desunazakeroxifif.pdf
    • https://zobegubitabid.weebly.com/uploads/1/3/0/2/130289204/jagebajamebow-suxaga-lovozerez.pdf
    • http://nuobeijing.devsite-1.com/uploads/1/3/0/3/130323642/130323642.html#blender+3d+architecture+download

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012aa.bin
78c1c55a2edda0a2772f54884cc8fc24b1d237118ca76402f9c088d4426507fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12AA 7960 bytes

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