Malicious PDF — malware analysis report

Static analysis result for SHA-256 29e6f26d90945dc0…

MALICIOUS

PDF

75.8 KB Created: 2021-06-08 22:34:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: bac98a0a30e83b522c7c868a8bcb6f56 SHA-1: 684c01fbb17304d335e889c32b5c7d8d07718529 SHA-256: 29e6f26d90945dc0344e443b4160ae56764eff396a9c7d4d88b82abee923bf70
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable hosting, suggesting it functions as a link farm or part of a phishing campaign. The embedded text mentions "Clash of Clans hack unlimited everything", a common lure for malicious documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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 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.
  • 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://queure.ru/pbw?utm_term=clash+of+clans+hack+unlimited+everything PDF link annotation
    • https://luwanolukurodo.weebly.com/uploads/1/3/5/3/135397368/6ff2e01.pdfIn PDF document text
    • https://dezegumi.weebly.com/uploads/1/3/4/1/134108828/febajojufaronoxabe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417226/normal_5fe8f32aee3b3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419413/normal_60034bd3b5bce.pdfIn PDF document text
    • https://sarununow.weebly.com/uploads/1/3/4/3/134366188/xufene.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428331/normal_6030d1ac1a105.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366400/normal_60133e0b250ac.pdfIn PDF document text
    • https://fezuxikazosulav.weebly.com/uploads/1/3/1/3/131398093/tejesuxitufofoxil.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374540/normal_5fddae416465c.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/82bff641-c167-458f-82e1-d0875a2ad33e/xonorubonudakakudekavi.pdfIn PDF document text
    • http://gepefupugalu.pbworks.com/w/file/fetch/144508485/ghost_rider_cartel_burn_face.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e64aa563-a4d4-4ebd-ada9-55e473a29069/good_video_game_company_names.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf110be6-7a48-4fcf-a844-7414d9afefdf/newborn_goats_pajama_party.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f99e48ca-9ae1-437f-a7c0-4858366da83d/86152176194.pdfIn PDF document text
    • http://pezeliv.pbworks.com/w/file/fetch/144732159/67983897311.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01dff4a9-035c-456a-9c9f-a4c47a701b36/ley_de_condominios_en_venezuela_2018.pdfIn PDF document text
    • http://vonodatob.pbworks.com/f/bavumivarikexelid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9e99c00-8d16-4d12-b43c-102b7b53ad7d/star_music_collection_2019_tamil_songs_download_free_mp3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84fc8099-c314-45f1-be8f-576def6ca491/briggs_and_stratton_engine_parts_catalog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9b4f15d-fa97-4485-bdeb-4d9743755b5c/how_to_reset_netgear_r7000.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05c8f82d-a6b4-4e47-a679-a488c56868ae/mechanical_engineering_degree_plan_utd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbc469a2-cf78-4e85-9dec-9c807657ea4c/how_to_analyze_the_risk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f529d2b-bed9-4020-a4d1-efb1471ef93a/97463856449.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87af2293-1bd5-4bc3-9ef4-4a93ad8aaaa5/39379822760.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aeff4b2f-b7f2-4a40-bb6d-1639ea8698ac/demaf.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_off0000e9c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9C8 5568 bytes
SHA-256: 1a4f1e820c72db160df851865ec27f69bb9f839f185623c5ce5255aadbb790ab
font_01_sfnt_off0000fc99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC99 10272 bytes
SHA-256: 4fca8f4ad816027bddec086f8bef0e677aa092077424032fbbed70dbf86091bc