Malicious PDF — malware analysis report

Static analysis result for SHA-256 f089368afb7ba673…

MALICIOUS

PDF

81.3 KB Created: 2021-03-09 01:54:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 3cd1e247375a99f36b6711fa72c0149b SHA-1: 8a189a3b6c3b8b5aed23d9f76062ffe342dff300 SHA-256: f089368afb7ba673a6938d89b7ae1e79e090d2376dd1a7784394c24dbde92d54
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 domains, suggesting it functions as a link farm for phishing or malware distribution. The embedded URL 'https://lozipotod.ru/aws?utm_term=apply+for+snap+online+in+nj' indicates a lure related to government assistance programs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://lozipotod.ru/aws?utm_term=apply+for+snap+online+in+nj PDF link annotation
    • https://cdn.sqhk.co/pigajifaw/fH6RvuU/brain_it_out_level_32.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419452/normal_5fe287dabce71.pdfIn PDF document text
    • https://fagesuxolibedif.weebly.com/uploads/1/3/0/9/130969327/d2300.pdfIn PDF document text
    • https://kobokudebixisog.weebly.com/uploads/1/3/5/3/135390699/2b4cfe1.pdfIn PDF document text
    • https://jukatuve.weebly.com/uploads/1/3/2/7/132741058/6885325.pdfIn PDF document text
    • https://cdn.sqhk.co/norumuwapa/hepgeV7/steel_strip_weight_calculator_formula.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370746/normal_601be0d31af48.pdfIn PDF document text
    • https://pitubesisimebi.weebly.com/uploads/1/3/2/6/132681325/8866230.pdfIn PDF document text
    • https://cdn.sqhk.co/goxobuve/hchfNhe/archero_unlock_rune_talent.pdfIn PDF document text
    • https://cdn.sqhk.co/nivazesoj/iAiiim2/plain_city_utah_homes_for_sale.pdfIn PDF document text
    • https://furamakivagoj.weebly.com/uploads/1/3/0/8/130814247/67e370b6075d.pdfIn PDF document text
    • https://cdn.sqhk.co/rijujonakuje/hchiDnA/color_hockey_game.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446030/normal_5fee0d6ec360f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f904ef53-caa1-4f0f-8a97-c50675c03ece.filesusr.com/ugd/2f8cea_4ddcaffa9aa848869338c1050e093c1c.pdf?index=trueIn PDF document text
    • https://4900ecec-7ac1-411c-be2c-b077674085c8.filesusr.com/ugd/493135_cab827c0f27e4976af798f92a1920345.pdf?index=trueIn PDF document text
    • https://ed21222e-fee3-4fab-8b52-e2ddb7bb35ab.filesusr.com/ugd/e73fea_dcc24b287d3543e1bc4bf6aa3e24b4c1.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fbbd769-bf7f-451f-a18a-39a5f91718f0/nursing_drug_book_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9404148-d70b-4086-8cc6-94d02d6ae41e/how_to_update_trimble_business_center.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2a420d9-5725-4066-9f05-800332ef1a3f/jekixusubifisusof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cee284a6-16d5-47d5-ae46-3dec67c56652/what_does_fl_mean_on_jump_starter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5767824-3818-44f2-a616-41028ca6108e/how_to_clean_drain_pump_filter_on_samsung_washing_machine.pdfIn PDF document text
    • https://0e9c393c-9feb-4465-ae9d-4486bea7a644.filesusr.com/ugd/4b68be_76cf12cf52b24abdab5a6b2bb4d578ac.pdf?index=trueIn PDF document text
    • https://1f571a09-6495-4108-bd1a-9715deae29b5.filesusr.com/ugd/b0bf26_588a568f539e4b9795c870bd5705f72d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a6c144d-fe08-47ca-8679-ab80a93f246c/food_dehydrator_chicken_jerky_recipes.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_off00010047.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10047 5064 bytes
SHA-256: befed13ef30e507e575d4905572042a20dc39f0cac254a810d1207f1c5ea8d84
font_01_sfnt_off0001119e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1119E 11120 bytes
SHA-256: f8ee0cfbffc354bf7d9fe415cbb6315eb2a93330a9aaa9051abe7be85ce0dfa3