Malicious PDF — malware analysis report

Static analysis result for SHA-256 372d15b01d3100fa…

MALICIOUS

PDF

72.4 KB Created: 2021-03-14 03:00:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 2d56fb936077d577b5cf47a1d211da3b SHA-1: 67f25d42925deff9a1d11bc2f710e80bc7ebfb84 SHA-256: 372d15b01d3100faed92cc44865070a82b9f968bd97d1871e2a4cf672a3c43df
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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 https://bologen.ru/wix?keyword=warlocks+rising+episode+4+free+online PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4470028/normal_5ffda14a0e983.pdfIn PDF document text
    • https://rukufutuseju.weebly.com/uploads/1/3/4/7/134748195/9062881.pdfIn PDF document text
    • http://namedaun.fun/hydraulic_calc_platee5ogx.pdfIn PDF document text
    • https://wuwikofoxanep.weebly.com/uploads/1/3/1/4/131437976/4164629.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391909/normal_5fe7dddee26d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409122/normal_6030d6a415e48.pdfIn PDF document text
    • http://ericksandoval.com/56142873966c49hy.pdfIn PDF document text
    • https://fekukutetixamam.weebly.com/uploads/1/3/4/6/134636283/61678d29.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392854/normal_5fdeb33528c94.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lokemuwebofeg.rf.gd/peptide_bond_formation_thermodynamically_favorable.pdfIn PDF document text
    • https://b01cffea-7a05-49e8-9781-04202a21c04b.filesusr.com/ugd/d5d855_011230c9134f472b81b8291fb54254d5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/girilifawuxi/wemukokirige.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/bepanah_pyar_song_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/mobile_app_development_course_for_beginners_singapore.pdfIn PDF document text
    • http://bumumewevebav.epizy.com/44816846318.pdfIn PDF document text
    • http://xekababemaxukop.rf.gd/tim_ferriss_girlfriend_2020_name.pdfIn PDF document text
    • http://xaxefoz.epizy.com/xolimufi.pdfIn PDF document text
    • https://9334512a-4df1-45dc-8804-f0fa1d9e2a3d.filesusr.com/ugd/9466eb_b021ce480b7a45de9c8c049af5802678.pdf?index=trueIn PDF document text
    • https://528f6e5c-6927-42ef-b7a5-a8f9c349750c.filesusr.com/ugd/07b979_c79f2b9096af4cccab6bfc013b368802.pdf?index=trueIn PDF document text
    • http://bezafesu.rf.gd/nuvetikolidi.pdfIn PDF document text
    • https://s3.amazonaws.com/kakef/animation_wallpaper_for_jio_phone.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA4C 5488 bytes
SHA-256: 7df730d79362114caca745f003f3ea43846110a6acb5150afff539c415f20e75
font_01_sfnt_off0000ed1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED1D 11076 bytes
SHA-256: 87808ac0539e002bfc45e06804dda3649ff8eb0a602c8979c7b374e9309ed79e

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