Malicious PDF — malware analysis report

Static analysis result for SHA-256 beb1a9c2ba554e63…

MALICIOUS

PDF

73.7 KB Created: 2021-03-30 06:06:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c2eb08a23ba774fad13d637ea36d1cb9 SHA-1: 40dca1e4610e268bb4d0515bc58f113b804a4d16 SHA-256: beb1a9c2ba554e63a2f24bf6a1fa3dfefd170c8b02f472784ae4de0aa3e864a3
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/123?utm_term=magnum+biangular+transformer PDF link annotation
    • http://chatik85939775.fun/cadre_photo_format_a4_ikeaqrc2o.pdfIn PDF document text
    • http://giwitijudaleka.mygamesonline.org/94032018437.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454286/normal_5fdbe6e109b5a.pdfIn PDF document text
    • http://sivesesugipode.scienceontheweb.net/46264640380.pdfIn PDF document text
    • http://opensoda.pro/show_me_all_the_magic_tree_house_booksm15ev.pdfIn PDF document text
    • https://lotaximadezepa.weebly.com/uploads/1/3/1/3/131379514/mubuvasivifuni-jitikadij.pdfIn PDF document text
    • https://cdn.sqhk.co/porekige/iiOjhhd/essay_about_kobe_bryant_life.pdfIn PDF document text
    • http://fruit-citrus.space/23941606432o9edh.pdfIn PDF document text
    • http://lidzadva.xyz/bnmu_result_2018o92p4.pdfIn PDF document text
    • https://cdn.sqhk.co/jezaziritav/gc5jbic/superior_tactics_rts_ios.pdfIn PDF document text
    • https://vafopizinenited.weebly.com/uploads/1/3/4/4/134480139/bf54b126ba1e6.pdfIn PDF document text
    • http://wosedumuf.mywebcommunity.org/cctv_camera_setup.pdfIn PDF document text
    • http://degimogug.mypressonline.com/15183285376.pdfIn PDF document text
    • https://nodopotol.weebly.com/uploads/1/3/4/0/134018708/9337193.pdfIn PDF document text
    • https://lelojijesinawe.weebly.com/uploads/1/3/1/8/131871501/fa13e.pdfIn PDF document text
    • https://novufetus.weebly.com/uploads/1/3/4/1/134131343/4220063.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/CqLhfN7/localizar_mi_android_por_gps.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387706/normal_6006407c746a0.pdfIn PDF document text
    • http://djami.ru/ice_sheet_translation_frenchnfoi3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/lofenuvovuxulubimo.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/69491980550.pdfIn PDF document text
    • https://s3.amazonaws.com/dujepav/93099213636.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/73946688257.pdfIn PDF document text
    • http://pimoxonevuwewax.atwebpages.com/what_is_the_importance_of_heat_in_our_daily_lives.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/500mb_mkv_bollywood_movies_free.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_off0000e2ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2CA 5232 bytes
SHA-256: b1bf70847e1690e85c7229bff428aa15d6ffb201322b01e334ea6fdad0ba949c
font_01_sfnt_off0000f48c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF48C 10700 bytes
SHA-256: 7cb0cd4f8366fe118a5ea93128016fc5cb9d291b15b642e8fc8f87980f34dde2

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