Malicious PDF — malware analysis report

Static analysis result for SHA-256 5932c467ae2ed325…

MALICIOUS

PDF

80.9 KB Created: 2021-04-28 07:44:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: d48eb72918b556eee0f9d15f20b99281 SHA-1: 7d6fdff7d10b450e7e1fb4e154b6feebc6e45ced SHA-256: 5932c467ae2ed325e28cc184c149e4e06ab56f1ba158756c5755832ff6e98917
186 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to direct users to malicious content. The presence of a URL related to 'how to reset homedics scale' indicates a lure to trick users into clicking. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://soxebez.ru/strik?utm_term=how+to+reset+homedics+scale PDF link annotation
    • http://pabixigenived.22web.org/kuwonemelagabobejona.pdfIn PDF document text
    • http://dowezujuzuzos.22web.org/to_photo_frame.pdfIn PDF document text
    • http://dedefazofe.iblogger.org/bibamuzir.pdfIn PDF document text
    • https://cdn.sqhk.co/monasomeb/geicS5j/retro_wallpaper_80s_retrowave_wallpapers.pdfIn PDF document text
    • https://jijixedo.weebly.com/uploads/1/3/1/3/131398351/2803163.pdfIn PDF document text
    • https://wapizorevumira.weebly.com/uploads/1/3/0/9/130969018/2525391.pdfIn PDF document text
    • https://cdn.sqhk.co/simikitivo/ghgfhKD/hexaware_delisting_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/wuwosexed/oifijig/valentine_s_day_picture_bingo_cards_printable.pdfIn PDF document text
    • https://cdn.sqhk.co/nujusowidom/bhiheCN/commuter_rail_define.pdfIn PDF document text
    • https://ruvawuwejijexut.weebly.com/uploads/1/3/0/8/130814193/977221.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a355a1ad-03f4-4c91-90d7-491d06837ca5/hotpoint_gas_stove_models.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a70f8a2-d6c3-474d-bbcb-64dd109bb068/kuzoxesilaragige.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4419ae3e-1270-4903-9dc6-003de391ec56/17010473623.pdfIn PDF document text
    • https://6cda4dd4-8aac-43e7-8003-7c0eea9f7907.filesusr.com/ugd/34e26e_b616ba165c634030a05aaf1717c9e3ab.pdf?index=trueIn PDF document text
    • http://salogun.rf.gd/95067410143.pdfIn PDF document text
    • https://68e1e3d4-268d-49bc-a8aa-b119cb10fea7.filesusr.com/ugd/3ceeb9_40d999d1ff964260b20d1ea3d6779204.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/5866e805-c5ca-43db-82b7-4b742c11425e/liravoj.pdfIn PDF document text
    • http://muwovupa.epizy.com/vutug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5690298b-8565-4a3f-b8ea-f2cf085d054e/can_someone_with_aspergers_have_good_social_skills.pdfIn PDF document text
    • http://jerasopel.epizy.com/customer_management_list_excel_template.pdfIn PDF document text
    • http://wotawegij.rf.gd/nixon_blaster_charger.pdfIn PDF document text
    • https://8c17aa34-c454-4d6c-a218-8929c845e329.filesusr.com/ugd/808cd0_fdd9fbe70f7b4b1fa5b26854af6655b2.pdf?index=trueIn PDF document text
    • https://52c77544-2eb8-427c-ad0e-a8a7e2ea9366.filesusr.com/ugd/93288f_566b4e6b49424a13b45d06427c3ea17b.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_off0000fc09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC09 5232 bytes
SHA-256: 42902dcdeaae5026da3cc37c0e22ae3b3c46fcd71a23f38716388786f4fadea4
font_01_sfnt_off00010db6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DB6 11556 bytes
SHA-256: 418af90d813224e82202884ef3950e61e0a97c00a7318a05350d9baff94a79d2