Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff05ccd0f6c3bbea…

MALICIOUS

PDF

83.1 KB Created: 2021-04-16 14:42:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 65cd3f6c64ada7441b0b2011bac7f98a SHA-1: d155ce6c1131be555f8c19da686d1753a3e92342 SHA-256: ff05ccd0f6c3bbea0ab7a7b4fc6108475c1a246e216ffaf5388c710e21b74266
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The primary URL, https://xezojetit.ru/strik?utm_term=how+to+reset+a+gas+hot+water+tank, is likely part of a scam or phishing attempt. No scripts were extracted, but the PDF structure and numerous external links indicate a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://xezojetit.ru/strik?utm_term=how+to+reset+a+gas+hot+water+tank PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383314/normal_60470b68caff3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489843/normal_6000cd15bd75d.pdfIn PDF document text
    • https://cdn.sqhk.co/soziwariru/h4kibwZ/global_smartphone_market_share_2020_q2.pdfIn PDF document text
    • https://cdn.sqhk.co/sidogorego/ehfhfkE/caption_for_wedding_photos_with_friends.pdfIn PDF document text
    • https://vokewubepil.weebly.com/uploads/1/3/4/4/134443825/2711338.pdfIn PDF document text
    • https://wexubowepupewaw.weebly.com/uploads/1/3/1/8/131856394/jatozukuwajazu-pigexifubaju-keradamoku.pdfIn PDF document text
    • https://cdn.sqhk.co/wujakegu/aaP6U6I/one_world_cup_2018_schedule.pdfIn PDF document text
    • http://fasuxelatiz.iblogger.org/the_eighth_habit_from_effectiveness_to_greatness.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376856/normal_5fdb2952b1f07.pdfIn PDF document text
    • https://cdn.sqhk.co/pivifilogopa/gefLThj/dunlop_ping_pong_table_walmart.pdfIn PDF document text
    • https://fenotitejov.weebly.com/uploads/1/3/5/3/135316040/mabopixijar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454988/normal_600c645683295.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380088/normal_6002894ba42e9.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://72be5e1b-4d14-4335-96ee-88463f604c48.filesusr.com/ugd/57ecfe_5ebe6e45443b4dd1b546a70a47b03a56.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/20b7b63c-0c29-43b7-8e39-b06b47348fe0/zonepoxazawixoze.pdfIn PDF document text
    • http://bividit.rf.gd/theme_park_building_games_android.pdfIn PDF document text
    • https://504b7f7c-d27d-4f2b-a6eb-e8dc7cf660cf.filesusr.com/ugd/6ba015_9495a7532a4445479b1aa91e0d99b1b6.pdf?index=trueIn PDF document text
    • https://e25b7b56-d8f7-44cb-9276-56428e53d1cc.filesusr.com/ugd/63f3e8_4771dd3578224ed38b3d735c75414cd7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c268cbc7-abac-42c8-84c0-2faec4cad2cc/o_que_colocar_no_curriculo_se_vc_nao_tem_experiencia.pdfIn PDF document text
    • http://kasarokoxakuke.epizy.com/92312195399.pdfIn PDF document text
    • https://7abbf572-6989-4614-8246-9d5ba34cd238.filesusr.com/ugd/af841b_69bc776d722a4f2eb37c775a6fcf01f0.pdf?index=trueIn PDF document text
    • http://zunimesigo.rf.gd/32081021608.pdfIn PDF document text
    • http://varogofef.epizy.com/overtone_crystal_oscillator.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_off0000fda1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDA1 4772 bytes
SHA-256: c114e20519b45f11ee1071331f1ad589054b619c5ea60ab1711a01a09eecdbba
font_01_sfnt_off00010dd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DD2 10240 bytes
SHA-256: ebd0c345863220756db97fe9ed6c25a60eed49138401d1f2ef03cdfa7e5854e0
font_02_sfnt_off000130c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130C9 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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