Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2eadfbd7aff19b4…

MALICIOUS

PDF

83.6 KB Created: 2021-06-08 21:40:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f35b6cbc2de995ac68add86f262141d9 SHA-1: cbe758d2f86c9bfe3e7179463d378654c31e440c SHA-256: b2eadfbd7aff19b4a971e432b99c8e95699750305fadfb830d4486ccba063310
186 Risk Score

Malware Insights

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

The PDF contains numerous external links, many hosted on disposable domains, forming a link farm. The primary URL suggests a lure related to a game mod, likely to trick users into clicking through to malicious content. ClamAV and ML classifiers strongly indicate maliciousness, and the structure points to a phishing or redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • 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 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://infrive.ru/pbw?utm_term=warhammer+dawn+of+war+apocalypse+mod PDF link annotation
    • https://kemusasozez.weebly.com/uploads/1/3/0/9/130969555/3860569.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495526/normal_60125b28f1778.pdfIn PDF document text
    • https://bazodezivif.weebly.com/uploads/1/3/6/0/136088162/nugus.pdfIn PDF document text
    • https://vewusijonaw.weebly.com/uploads/1/3/4/4/134489037/somunizadogaz.pdfIn PDF document text
    • https://zedowegekinusil.weebly.com/uploads/1/3/3/9/133997302/9ba242243.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383923/normal_604656fd089fe.pdfIn PDF document text
    • https://sukewemuzi.weebly.com/uploads/1/3/4/6/134668821/3309958.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383475/normal_6040daca190df.pdfIn PDF document text
    • https://temabodanifow.weebly.com/uploads/1/3/1/4/131454916/raxeramodi-bepelutufix.pdfIn PDF document text
    • https://fusajowaxoxa.weebly.com/uploads/1/3/5/3/135344195/f49aa8d7f39c2b.pdfIn PDF document text
    • https://zitenimed.weebly.com/uploads/1/3/1/3/131383388/1994247.pdfIn PDF document text
    • https://masizomomom.weebly.com/uploads/1/3/2/6/132681315/sezujapepef-rogobifivadup-witime-befulilose.pdfIn PDF document text
    • https://risovokoxenixe.weebly.com/uploads/1/3/3/9/133997247/9224237.pdfIn PDF document text
    • https://misurabize.weebly.com/uploads/1/3/4/6/134666879/deruwavu-bafedake-bawukagomipawo.pdfIn PDF document text
    • https://kimiragijasem.weebly.com/uploads/1/3/4/0/134096233/999b0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495390/normal_5ffc399925cef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/51968468-364b-4f18-bed2-6fa248091e8c/harry_potter_complete_8-film_collection_box_set_dvd.pdfIn PDF document text
    • http://gifavipa.pbworks.com/f/2015_vw_passat_repair_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3fb13da-7c27-4fbf-a7ce-6605e1dd0e81/25350236981.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c13e4afc-b992-4268-8fd2-fb1eb830614a/how_to_trigger_a_glitched_blood_moon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90fbcd5a-07e6-4a09-9c4a-677f9be358cd/mesabigegofipinokalasesak.pdfIn PDF document text
    • http://maxasol.pbworks.com/w/file/fetch/144536991/goboxewerijigokagetob.pdfIn PDF document text
    • http://liguduper.pbworks.com/w/file/fetch/144876375/jio_rockers_sultan_movie_download.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA00 5264 bytes
SHA-256: 4ef08ee53c7934d686275ad042529668d03a17760d7991a6160637891db4bc94
font_01_sfnt_off00010bd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BD6 10988 bytes
SHA-256: c1a5ec285e151901524f4517deecb308a235131ea08d6b164d19fa0971b05c03
font_02_sfnt_off00013133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13133 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361