Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a391c437af08e45…

MALICIOUS

PDF

37.1 KB Authoring application: pdf-parser
MD5: b5b9a2e8fd6d7c899e184678b9661c27 SHA-1: 5903291881c97446c5b425d13944623334fe08bc SHA-256: 3a391c437af08e459d3ddd68e189d35ffed45e127e16cd50cf3e6450466b1c4e
150 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. The critical PDF_SEO_LINK_FARM heuristic indicates the presence of numerous external links, with 'modernretailcollective.store' being a dominant host. The document body content is heavily corrupted and unreadable, providing no further context. The primary attack pattern appears to be a link farm designed to redirect users to potentially malicious sites.

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://modernretailcollective.store/uploads/1/3/0/6/130620538/7139639.pdf
    • http://metamorphosisinblack.net/uploads/1/3/0/2/130272587/lenif.pdf
    • http://kelsweet.com/uploads/1/3/0/2/130289365/497a7.pdf
    • http://jeffersonhigh.net/uploads/1/3/0/7/130739206/0dbe8c2.pdf
    • http://bargeacbll.com/uploads/1/3/0/4/130435784/8445985.pdf
    • http://alittlesernity.shop/uploads/1/3/0/6/130603690/pejedefedemo_wumesefalepijup_tovitowazofi_gubajirigekug.pdf
    • https://botavaxemigog.weebly.com/uploads/1/3/0/3/130379361/507eda786d6.pdf
    • http://villamklima.com/uploads/1/3/0/4/130476272/0dac8955a3c2.pdf
    • http://essentialcleaning.vegas/uploads/1/3/0/3/130379429/luburi-nubisatijitiw-sekaxawome-wurinevoj.pdf
    • http://sandymullinsonline.com/uploads/1/3/0/6/130605505/8676831.pdf
    • http://cpin.weebly.com/uploads/1/3/0/3/130379492/wepobowiwiwanak.pdf
    • http://drpatty.net/uploads/1/3/0/7/130775935/130775935.html#difference+between+agile+and+scrum+certification

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012c9.bin
777314a691de9376252cd32b68f742c7fd35e42f8d2c8f438931e43113a56aa6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12C9 7272 bytes

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