Malicious PDF — malware analysis report

Static analysis result for SHA-256 080adccbdb9bef0b…

MALICIOUS

PDF

74.2 KB Created: 2021-03-10 14:43:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: a230037f3a41eea171f5fced5e81d7a7 SHA-1: dfc7c8e3a499d6213e2c461def582e93f3f4f991 SHA-256: 080adccbdb9bef0bba8efe7696126ee9b102bbd82fe80ae2aba27ef55ef4186e
126 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, likely intended for phishing or malware distribution. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic indicates a pattern of using numerous disposable domains for hosting malicious content. While no scripts were explicitly extracted, the ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or delivering a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • 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 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://soxebez.ru/strik?utm_term=dremel+7700+battery PDF link annotation
    • http://taforojujutusig.mygamesonline.org/rizegikexe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427085/normal_602e4f91ad826.pdfIn PDF document text
    • http://dilurijarejo.22web.org/garudivuwefejomatisagopag.pdfIn PDF document text
    • http://bitalotava.scienceontheweb.net/55916078080.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450733/normal_5fdb38a7858e6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369922/normal_5ff973e424c25.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419847/normal_5fcbc26b1c9e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481157/normal_5fd9758d57a4e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ef90beaa-bca2-431e-862c-49c19dd94618.filesusr.com/ugd/06497e_83d8245119a54bbaa4717cacbfb4e69c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a55de088-655d-4cc6-8655-912025d246df/company_of_heroes_2_master_collection_trainer_fling.pdfIn PDF document text
    • http://bogalibamadom.myartsonline.com/xelozobibidokifegubuzav.pdfIn PDF document text
    • http://benamow.myartsonline.com/bozuvos.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/didujedomazezobufolikiku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24559552-4371-4d42-ad8c-a9abecefe872/asus_router_rt-n12_firmware_download.pdfIn PDF document text
    • https://s3.amazonaws.com/donarepemi/acknowledgment_of_paternity_form_03pa209e.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29653af5-6b54-4a0e-af5f-1ebd64096e35/why_does_my_bose_soundlink_keep_beeping.pdfIn PDF document text
    • https://04a9e765-cf69-4035-9b9a-998d8fb4e692.filesusr.com/ugd/8c5016_f3d7760535f24166bb200daa477dab00.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lebejos/avi_to_mp4_converter_online_free.pdfIn PDF document text
    • http://fimuwudefixolet.epizy.com/how_to_replace_a_fios_battery.pdfIn PDF document text
    • http://melaworogafema.epizy.com/html_form_button_align_center.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/taco_bell_allergen_menu.pdfIn PDF document text
    • https://ca108e69-7b6b-43f0-8f16-d96ebeb8a33d.filesusr.com/ugd/79e0dc_a8320222425d4dd5be9e09b994597e4f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xenavuxa/zutux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f606ec46-c890-4fa3-bf6f-276c2bca0a72/demosivirewanevetivosugug.pdfIn PDF document text
    • https://1a2149e7-ca7f-4e7c-a584-0e483de6f3af.filesusr.com/ugd/9219f8_cbbc48d1ac924ae2aed05c9409fbd38a.pdf?index=trueIn 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_off0000e348.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE348 5116 bytes
SHA-256: b2121c570858028b1d226bfa39203e9f4ca80bef6f4e3b25fd35bc5ea6700468
font_01_sfnt_off0000f4a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4A6 11336 bytes
SHA-256: 7df97b107572715c19e5321b14838a826e457b9652d9352995cf4c6c64e92eb6