Malicious PDF — malware analysis report

Static analysis result for SHA-256 14eaa50ffdbc09a0…

MALICIOUS

PDF

96.6 KB Created: 2021-04-15 01:44:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 87935fb4d175d76e4be098da3e6a2769 SHA-1: 74babd57e04cd36fa849e31ecb20d477a82d6932 SHA-256: 14eaa50ffdbc09a05a0300176ea56b3ecdc2a98fe7872d6912788b0262fb9285
194 Risk Score

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 and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 7

  • 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 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.
  • 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://jumiwimov.ru/strik?utm_term=craftsman+18+gauge+brad+nailer+repair PDF link annotation
    • https://cdn.sqhk.co/kofelejezem/HgfcidV/goldfields_money_annual_report.pdfIn PDF document text
    • http://arm-watch3.club/mosotelenuzupaxuklsr6y.pdfIn PDF document text
    • https://wulapoledonuker.weebly.com/uploads/1/3/2/6/132695240/lerafoxajoworuk_nipuvipawad_gepen.pdfIn PDF document text
    • https://cdn.sqhk.co/woselukafo/iiwXmo2/biker_mice_from_mars_full_movie.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486523/normal_6019bab64501a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411491/normal_6058211886b47.pdfIn PDF document text
    • http://teksol.xyz/avg_latest_update_definition_freec0bgb.pdfIn PDF document text
    • https://cdn.sqhk.co/zevijevam/2VUjTij/total_conquest_offline_apk_hack.pdfIn PDF document text
    • https://paxituzupinemof.weebly.com/uploads/1/3/5/3/135303349/wadabevuketonebexi.pdfIn PDF document text
    • https://cdn.sqhk.co/kanedufopuma/VFyDreS/caption_for_facebook_cover_photo_with_friends.pdfIn PDF document text
    • https://cdn.sqhk.co/kabevapixox/fgiZgfb/juegos_de_jungle_monkey_running.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418367/normal_5fd946c7bea8c.pdfIn PDF document text
    • https://cdn.sqhk.co/bawijodol/XQhdhjZ/98198713609.pdfIn PDF document text
    • https://cdn.sqhk.co/wovenebi/jbiaIjd/40902963659.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500438/normal_5ff582deab6eb.pdfIn PDF document text
    • https://cdn.sqhk.co/bofagenined/ijjfMgf/bowman_fighting_championship.pdfIn PDF document text
    • https://cdn.sqhk.co/keximovib/SrShajx/boardwalk_empire_episode_guide_season_1.pdfIn PDF document text
    • http://pumba-timon.space/gagowixibapzow2.pdfIn PDF document text
    • https://filavemegu.weebly.com/uploads/1/3/4/8/134883773/fedufesof.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368496/normal_5fdb9ebf78fbc.pdfIn PDF document text
    • http://mavpa.fun/what_intermolecular_forces_are_present_in_dimethyl_etherd2q7s.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/Gijjhq7/vepoxonojimugapotap.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f4aeaf4-7396-46d3-a3fc-4a35acc708ea/gelalawikurefaxux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/504538ab-615a-4131-be6f-8ee0d691115b/fuluxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db2555d3-2e3d-4400-9ea5-9d1780efa9b0/tewatagafegepuxawepex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/149a4f55-7a54-44ef-a595-f5c3e74d73e7/11910974596.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56439b87-68af-4e18-af82-61e33797cd39/66594401184.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_off00013974.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13974 5652 bytes
SHA-256: 01abf4d056d643e4706980117baebeff42ac751dc423f90f5467b848a65d4696
font_01_sfnt_off00014c97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C97 11760 bytes
SHA-256: d3ce8a6851b0d487c6534b7f630c614085bc848ca77508f66d870dc97e10cbca