Malicious PDF — malware analysis report

Static analysis result for SHA-256 eda2d7c7eb363cba…

MALICIOUS

PDF

73.9 KB Created: 2021-03-09 00:50:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 10f8471191746439c2d1cfb05d64b537 SHA-1: 5ba40273ba37d5c5173b433365083fbc2ce571ca SHA-256: eda2d7c7eb363cba3f6343976c5574902f32d6d39a87adb59240bcb7fb79c865
134 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. The presence of numerous external links, including one pointing to a potential download URL, and a heuristic firing for a 'download button' lure suggests this document is designed to trick users into downloading further malicious content. While no scripts were explicitly extracted, the PDF structure and embedded links are consistent with a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://pelibifir.ru/wb?keyword=american%20standard%20freedom%2090%20furnace%20ignitor PDF link annotation
    • http://xubanapirobula.mypressonline.com/88243151545.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369773/normal_5fe229b180580.pdfIn PDF document text
    • http://kizunawinim.getenjoyment.net/z_for_zachariah_film_cast.pdfIn PDF document text
    • https://fenizivafuno.weebly.com/uploads/1/3/1/3/131380836/jinaxugarire.pdfIn PDF document text
    • https://bewapuvin.weebly.com/uploads/1/3/1/4/131453684/vazikelitivu_nerinanezudedu_sosojifebamaka_wamawi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478655/normal_602341be83a48.pdfIn PDF document text
    • https://sunowakodi.weebly.com/uploads/1/3/2/8/132814938/a54f7f50ec4e.pdfIn PDF document text
    • https://zezupivipikoko.weebly.com/uploads/1/3/4/5/134596705/womodowovepavo_ruvom_baxagixodod.pdfIn PDF document text
    • https://cdn.sqhk.co/jawefujivi/YgehjaR/big_bang_theory_amy_evolution.pdfIn PDF document text
    • https://cdn.sqhk.co/rajemaramiw/gf54The/hepatic_steatosis_diagnosis.pdfIn PDF document text
    • https://cdn.sqhk.co/vamunidibu/hfPX5jh/10764816359.pdfIn PDF document text
    • https://cdn.sqhk.co/dawadetugas/jg5qPS1/vafubodife.pdfIn PDF document text
    • https://cdn.sqhk.co/kafexobesa/uBifJgc/noble_girl_decorate_a_vacation_home.pdfIn PDF document text
    • https://fetatoba.weebly.com/uploads/1/3/4/6/134689412/345676.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447914/normal_6033a0aa43ce6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420924/normal_601a482cf306f.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/tarizirefevifab/bogan_hd_video_song_720p.pdfIn PDF document text
    • https://s3.amazonaws.com/xomepixo/free_1080p_wallpapers_for_pc.pdfIn PDF document text
    • http://bixozebaxikapos.atwebpages.com/homemade_wood_lathe_stand_plans.pdfIn PDF document text
    • http://vutogebufuz.myartsonline.com/bujifevofemiwisodomatu.pdfIn PDF document text
    • https://s3.amazonaws.com/fosawef/halloween_coloring_sheets_printable_free.pdfIn PDF document text
    • http://supajiwa.myartsonline.com/what_are_the_qualities_of_a_real_husband_material.pdfIn PDF document text
    • http://vasakuzepilaxi.onlinewebshop.net/kalnirnay_calendar_january_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/zatazewoz/96842840428.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_off0000e0b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0B4 5596 bytes
SHA-256: 5aaed203ae2752a8654ad287aa85a1298dfb447576f3e72ae9f7b04fcfe52da9
font_01_sfnt_off0000f3a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3A1 11192 bytes
SHA-256: 82f4dbcd4d1ca82162ad1202baf26c48f125bfc96514bbff2449a042e93a96bf