Malicious PDF — malware analysis report

Static analysis result for SHA-256 abf8a02aa5163b6c…

MALICIOUS

PDF

77.5 KB Created: 2021-06-03 20:52:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 3af785a433180c241896079de26b8518 SHA-1: 2177949ed9a413762246afb0f5f577e12dad4fed SHA-256: abf8a02aa5163b6cd0959252730e8b225bf2d780e2336facc7e3edbee39c9327
186 Risk Score

Malware Insights

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

This PDF document is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to numerous external websites, with a primary lure appearing to be a movie streaming link. The presence of multiple external links, some on disposable hosting, suggests an attempt to distribute malware or conduct phishing operations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • 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://drafthe.ru/pbw?utm_term=ver+pelicula+120+dias+de+sodoma+en+espa%25C3%25B1ol+latino PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4421214/normal_6035cfe56e7df.pdfIn PDF document text
    • https://tipiridevozono.weebly.com/uploads/1/3/4/3/134349557/84c8696e24.pdfIn PDF document text
    • https://kexazupaxi.weebly.com/uploads/1/3/3/9/133997339/kibakeju-xubejubetibazur-pukekasevoseluj.pdfIn PDF document text
    • https://muvepabeburok.weebly.com/uploads/1/3/1/4/131453329/a4badf8c84a2f.pdfIn PDF document text
    • https://rufekelikofevav.weebly.com/uploads/1/3/1/0/131070689/pomoz.pdfIn PDF document text
    • https://lularufopit.weebly.com/uploads/1/3/5/3/135326527/81d6673e8d5d5.pdfIn PDF document text
    • https://xuxuroxipekawip.weebly.com/uploads/1/3/4/2/134265976/3173455.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450248/normal_60039871e474b.pdfIn PDF document text
    • https://fixefukazadutux.weebly.com/uploads/1/3/1/6/131607703/2718579.pdfIn PDF document text
    • https://jiwebatije.weebly.com/uploads/1/3/3/9/133997557/3796341.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/4daae400-267a-429a-9788-0ff322ec4c3f/preppy_handbook_quotes.pdfIn PDF document text
    • http://kefimazusob.pbworks.com/f/79334122390.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6de532c6-b1e0-43d8-b235-03838e14b84f/maytag_bravos_washer_diagnostic_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93bac48f-356e-486b-afa9-e84c9051ede9/songs_about_bad_mother_son_relationships.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75b6c71d-b736-4410-b78b-8a19485bd68c/jasujukirakeweg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6cbd92c-e0ad-4f10-b8c6-0358c48c45e9/zimofobufi.pdfIn PDF document text
    • http://vowujepojez.pbworks.com/w/file/fetch/144427236/56609600307.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d79fe64a-8e8b-4052-8062-b548730dd36c/samsung_galaxy_t290_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/874a016a-3548-4790-ab32-4b3b434403c8/momo_food_recipe_in_hindi.pdfIn PDF document text
    • http://giwupiraride.pbworks.com/f/bijubete.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de5568d2-1020-4ac1-92a2-bba6dca8b45b/list_of_teaching_methods_in_science.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB59 6424 bytes
SHA-256: 120dfd7c7977cfb9a90e0c19aa24ce80f3ad63f69756627d616fe21accc03e95
font_01_sfnt_off0000eb3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB3B 5724 bytes
SHA-256: 0bfd6f21da155d39bc0faa91638f930f16c87e3179d33dce4dddcb3e361750f8
font_02_sfnt_off0000fe5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE5E 12240 bytes
SHA-256: f5b5b66889abd0530b1efb437067da16a9e007a47dc3fb047d8cb3a5f48e431f

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