Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ca9493284612c04…

MALICIOUS

PDF

75.4 KB Created: 2021-03-20 19:55:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 3435e9b583a049de254f66224355c9c1 SHA-1: 273ad04a25a749402087436fc70ffba95744020e SHA-256: 9ca9493284612c041db5721f56b9f9c250e5cdb111eece01de18ff701c601363
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are disguised as search results for various topics, including religious texts. The primary malicious URL identified is 'https://lozipotod.ru/strik?utm_term=the+quran+bible+online', which is likely used for phishing or to serve further malicious content. The presence of a PDF link farm heuristic and ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicates a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • 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.
  • 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://lozipotod.ru/strik?utm_term=the+quran+bible+online PDF link annotation
    • https://tenasedoba.weebly.com/uploads/1/3/4/3/134333827/8473066.pdfIn PDF document text
    • http://zonuvak.medianewsonline.com/a_defense_of_abortion_david_boonin.pdfIn PDF document text
    • https://gazafakapudon.weebly.com/uploads/1/3/4/3/134345815/vexexerizir-zobewapagemobi-lirevuxizijap.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454545/normal_601730cdf0289.pdfIn PDF document text
    • https://lelodudovoveju.weebly.com/uploads/1/3/1/6/131607117/xinuxu.pdfIn PDF document text
    • http://puveputado.sportsontheweb.net/perched_water_table.pdfIn PDF document text
    • https://mivezariwib.weebly.com/uploads/1/3/4/5/134582287/2e85143b27ecaf.pdfIn PDF document text
    • https://gejizataki.weebly.com/uploads/1/3/3/9/133997606/gezawojov.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475588/normal_5ffe26d3d5a39.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499656/normal_601b91c8770a8.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/sevoga/59793189515.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/why_refrigerator_freezer_not_cooling.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22fa3259-961e-4530-bdc5-b961fd1e3105/how_to_pull_apart_a_sodastream.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/xijazixoz.pdfIn PDF document text
    • https://s3.amazonaws.com/jedobufudajewu/rakuten_viki_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61a52cf9-8152-493f-9652-296badce45b8/wipexuposefudomenines.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/does_costco_sell_gym_equipment.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/kilibutesi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36cef59f-f15a-4d8e-a1ac-0466a76a2d26/words_to_describe_something_touching.pdfIn PDF document text
    • https://s3.amazonaws.com/liluvad/13401610438.pdfIn PDF document text
    • http://kimoviranonaf.onlinewebshop.net/samsung_galaxy_s9_plus_screen_protector_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/are_there_any_transatlantic_ships.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b70e148-a6cf-4add-8225-9b8d6ad1a984/black_and_decker_weed_eater_18v_battery.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_off0000e8e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8E1 4812 bytes
SHA-256: 652017a73436b2da8d769c5c0b27f4b82bfd91b87f9f601397663c399f05d8d9
font_01_sfnt_off0000f938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF938 11112 bytes
SHA-256: cba7ede34feed154274bc9262c8b6a7211c6c2d6446008aebea7a1a054938be3