Malicious PDF — malware analysis report

Static analysis result for SHA-256 eabb381d82cadf60…

MALICIOUS

PDF

40.0 KB Authoring application: Mobipocket Creator
MD5: 23ea520889fce74f7dd3844b5832f8e5 SHA-1: c6fc1fe7839d7ce6d2ff5d11cc117977198fdce6 SHA-256: eabb381d82cadf60a802e303f726e5aea7f94af34c7a66749370895b731b4cd3
152 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. The PDF_SEO_LINK_FARM heuristic specifically points to a large number of external links, with the primary suspicious URL being http://firadawa.kuhni-msc03.icu/uploads/2020/01/27/4953640.pdf. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution.

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://firadawa.kuhni-msc03.icu/uploads/2020/01/27/4953640.pdf
    • https://zitosetomoti.weebly.com/uploads/1/3/0/3/130323733/nukowametozavax.pdf
    • https://zizatada.weebly.com/uploads/1/3/0/3/130323567/zixene.pdf
    • https://dukajawod.weebly.com/uploads/1/3/0/5/130538817/f497983149.pdf
    • https://pafadazedikin.weebly.com/uploads/1/3/0/3/130313249/kevanexifusatasubuwi.pdf
    • http://fuj.dns-oldi-nix.info/uploads/2020/01/27/9804783264e91.pdf
    • http://jidifevo.ewrty.xyz/uploads/2020/01/27/pupukefaretipidun.pdf
    • https://tevuwenazaletu.weebly.com/uploads/1/3/0/6/130605399/a6e82989e3ffe1.pdf
    • https://letoloxan.weebly.com/uploads/1/3/0/2/130289322/jurijemofimifeduka.pdf
    • https://sibugomovoxone.weebly.com/uploads/1/3/0/2/130289235/ruzivajed.pdf
    • http://magimafr.ovh/uploads/2020/01/27/wuwizuforejok-boladamajepoxe-belowe.pdf
    • https://kanakamoxatu.weebly.com/uploads/1/3/0/3/130313529/b4aba3.pdf
    • http://fohow64.ru/uploads/2020/01/28/namexefawegexix_jumoxivav.pdf
    • https://rafilaluxonijew.weebly.com/uploads/1/3/0/4/130476150/130476150.html#10+difference+between+heterochromatin+and+euchromatin

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000136f.bin
72a0b3430a3698283d7ee8200d8fc98a00b673ca321411d41b01d6294bffb69c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x136F 7908 bytes
font_01_sfnt_off0000559f.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x559F 16036 bytes

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