Malicious PDF — malware analysis report

Static analysis result for SHA-256 9149a39fa2ae51a3…

MALICIOUS

PDF

83.2 KB Created: 2021-04-07 00:01:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 98b087a1ab59284802239f66dccad270 SHA-1: 28462c9229d474dfd4fae2d6fde2fa3b97fca25a SHA-256: 9149a39fa2ae51a3dcf93d5290947d359f690d0c1405fbc3a1632d3c1b9f35eb
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan threat. It contains numerous external links, many hosted on disposable domains, suggesting a link farm or redirection scheme. The document body references a popular movie title, likely as a lure to disguise the malicious nature of the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://jumiwimov.ru/123?utm_term=bahubali+2+telugu+movie PDF link annotation
    • http://garobunatuxovi.scienceontheweb.net/active_and_passive_voice_exercises_all_tenses.pdfIn PDF document text
    • https://cdn.sqhk.co/nakunadubux/cNQMhhP/lucky_block_minecraft_ps4.pdfIn PDF document text
    • https://pugewolusaw.weebly.com/uploads/1/3/1/4/131453132/famovadewipig.pdfIn PDF document text
    • http://kikababono.mywebcommunity.org/20707025966.pdfIn PDF document text
    • https://gosasolana.weebly.com/uploads/1/3/4/5/134523876/pawefego.pdfIn PDF document text
    • https://cdn.sqhk.co/lijipatalenu/MSgcU12/survival_craft_online_hack_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367903/normal_5ff2bab50ef08.pdfIn PDF document text
    • https://cdn.sqhk.co/tovisegag/w7ihdmF/zirerolawiginusofif.pdfIn PDF document text
    • http://ig-mediateam.net/916204822827kaoo.pdfIn PDF document text
    • https://cdn.sqhk.co/borefigux/9TNZ11X/fijopezatud.pdfIn PDF document text
    • http://reduslimitalia-official.site/is_the_witcher_as_violent_as_game_of_thronesbmdor.pdfIn PDF document text
    • http://finansi-7.online/zawamezibox594v.pdfIn PDF document text
    • http://soul-felt.com/xspc_raystorm_pro_x4_photon_ax280n7mou.pdfIn PDF document text
    • http://testrun.ru/cafeteira_breville_manualnzzd7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384145/normal_60021d244b8a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370280/normal_6067aa8074cb9.pdfIn PDF document text
    • http://dodemul.mygamesonline.org/gadukanivapogunivojiju.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451563/normal_606ab3ff8d0df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366335/normal_604d1cfc9e3d9.pdfIn PDF document text
    • https://bukivobiwizu.weebly.com/uploads/1/3/4/0/134097020/xukaponaz-bagiwokamo-nejuvugejiluxol.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/metubevozisul/far_off_crossword_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/pusixa/7_generation_family_tree_template_free.pdfIn PDF document text
    • http://radiviwix.onlinewebshop.net/levupe.pdfIn PDF document text
    • https://s3.amazonaws.com/baxunaf/77338919012.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_off00010a42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A42 5208 bytes
SHA-256: e755d499e6848027c82ae515ea6b22a97d278348ad2536ec3ed247ab5103b563
font_01_sfnt_off00011be1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BE1 10804 bytes
SHA-256: ad4907a2b200d69990b28cc6d4c79f19aaac9056cf45fae2f526ded1f5591d63

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