Malicious PDF — malware analysis report

Static analysis result for SHA-256 e95808b2e3d24ff5…

MALICIOUS

PDF

70.2 KB Created: 2021-04-12 21:52:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 98dd27e9f4350f76e9f3fc6332402298 SHA-1: 84154059055f7fe550b9eeba05be326fbb428157 SHA-256: e95808b2e3d24ff58186a0d5c95afa1f9d93fa8fc01e38111c0b2fa011324ec8
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • 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 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://xajibur.ru/strik?utm_term=toto+sw2034%252301+c100+washlet+electronic+bidet+toilet PDF link annotation
    • https://punelita.weebly.com/uploads/1/3/4/6/134679726/871968.pdfIn PDF document text
    • https://cdn.sqhk.co/kezixowog/ewCig2M/parurepe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476285/normal_5feedef9b8e9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474471/normal_606cccc080c74.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444882/normal_5ff24ae784f3f.pdfIn PDF document text
    • https://cdn.sqhk.co/buvovemif/dK1zie6/fejugadoja.pdfIn PDF document text
    • https://zegekeli.weebly.com/uploads/1/3/4/6/134616407/wikexajebijagumoz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378170/normal_603aa923571fc.pdfIn PDF document text
    • https://xukokamil.weebly.com/uploads/1/3/4/3/134317204/momegipizusakuraka.pdfIn PDF document text
    • https://lilalosemojuwo.weebly.com/uploads/1/3/0/8/130814601/jivirenave.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/s8a5aie/85271917119.pdfIn PDF document text
    • https://cdn.sqhk.co/gijosevozu/ejen7x2/can_t_set_mp3_as_ringtone_android.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366024/normal_5ff01c810932b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492918/normal_6004b842283b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421615/normal_606c146aa50d2.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/42dafc46-e441-4dff-9d65-6a45707e4a41/how_to_use_google_classroom_video.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a88671ef-171c-48a1-b391-288cf1ccc16f/the_power_of_no_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/017a6449-9986-4a4b-a6e6-76b21d915c92/puwuwekefimemubozawizusas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/579960cc-a5b0-4f8a-bb34-d8be94942da3/2019_tesla_model_3_for_sale_near_me.pdfIn PDF document text
    • http://fawosafo.epizy.com/percy_jackson_and_the_lightning_thief_fan_trailer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e21aa71-039f-4d53-b5d4-744286d8a5c3/14061237907.pdfIn PDF document text
    • http://mimogovudefo.rf.gd/95622115929.pdfIn PDF document text
    • http://bulujulu.rf.gd/google_chrome_exe_uptodown.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_off0000d459.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD459 4908 bytes
SHA-256: 84a51ca462181713bbbd3fb7f13d44b6493303ac02b5541fa8f32591df0abd0d
font_01_sfnt_off0000e53f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE53F 10680 bytes
SHA-256: 70e304d44f8b32513f959eb46b89dfe57a03a6c501b5b75197b5b1ed06855f77

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