Malicious PDF — malware analysis report

Static analysis result for SHA-256 009e663679262edd…

MALICIOUS

PDF

119.9 KB Created: 2021-03-22 10:06:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 78c5dea73a926b05c1fd897a42910f77 SHA-1: 5141b3b51941824a3dfa9484c29c8ab28c05ef66 SHA-256: 009e663679262edda87e5546a820035122bc4d2d82e4fbf9d4d38a4b490420fd
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm or SEO manipulation tactic. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution via these links. No scripts were extracted, and the document body is heavily obfuscated, preventing a more detailed analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://leonvi.ru/wix?keyword=barb+assault+queen+guide PDF link annotation
    • https://cdn.sqhk.co/muditazu/hjUEjeR/lalevusalukonifolevoluxas.pdfIn PDF document text
    • https://cdn.sqhk.co/zurefaxenov/c1gi7gi/51306141669.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367299/normal_5ff66b1560003.pdfIn PDF document text
    • https://cdn.sqhk.co/xufuwejaxe/g4VuWif/42820704190.pdfIn PDF document text
    • https://lefipejime.weebly.com/uploads/1/3/4/6/134668800/jubawe.pdfIn PDF document text
    • https://tadilagene.weebly.com/uploads/1/3/1/3/131381422/4204772.pdfIn PDF document text
    • https://warenumew.weebly.com/uploads/1/3/4/8/134871813/1c0d3042.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425772/normal_6023d02750c06.pdfIn PDF document text
    • https://cdn.sqhk.co/tetolonul/VhOhjgm/foridelimijidalozimexu.pdfIn PDF document text
    • https://cdn.sqhk.co/kuvuwisarov/lAic5gf/93981504500.pdfIn PDF document text
    • https://cdn.sqhk.co/kerodamajop/vjfNwwP/rankled_meaning_in_tagalog.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366063/normal_602fd6b80a798.pdfIn PDF document text
    • https://cdn.sqhk.co/zotipimesaza/gjgjihu/2007_chevy_avalanche_service_manual.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366665/normal_5ff29227b185d.pdfIn PDF document text
    • https://cdn.sqhk.co/kotolodegag/h3vY7hb/infinity_space_shooter_to_the_top_down.pdfIn PDF document text
    • https://cdn.sqhk.co/suzironanes/LDhajcH/kopa_samsu_lyrics.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451757/normal_5ff5f658368db.pdfIn PDF document text
    • https://tugalebuwe.weebly.com/uploads/1/3/4/0/134012885/34c4f5f.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/f1a8ac76-a7db-4bb1-98c2-137e9018b6da/referenceerror_request_is_not_defined_node_js.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c711f94b-017e-4161-a592-a416ae3a1cd9/cyberpunk_2077_gameplay_leak_watch.pdfIn PDF document text
    • https://s3.amazonaws.com/daniwodug/44005252882.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/fade_in_android_animation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ce6ed3a-7dff-4e1d-8938-576eca9c5577/pre_algebra_with_pizzazz_book_bb_answer_key.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d828.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD828 57384 bytes
SHA-256: dca1b2e19530cf66eba55a636150fd52704686c3e1812775930e26767ae0a4d1
font_01_sfnt_off0001850f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1850F 5308 bytes
SHA-256: bcba3be70b4dfe29643f90c5524673132ffd65fc7c8cce58b5d7310b8a013ee0
font_02_sfnt_off0001971a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1971A 10160 bytes
SHA-256: 35b9a6e557ac4d905fee191f2907a9dc904168cfa474646d985254751517c59f
font_03_sfnt_off0001ba43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BA43 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15

Open this report in the interactive analyzer, or submit your own file for analysis.