Malicious PDF — malware analysis report

Static analysis result for SHA-256 5180c8cd7ef56482…

MALICIOUS

PDF

74.4 KB Created: 2021-03-23 21:46:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 225614b5736147154be97c83ecd65e41 SHA-1: 1097b3b02e8df94458cae4ddd0846cf018657336 SHA-256: 5180c8cd7ef56482020b453a0516429c043d43f582f7fbeb90f3882e09281ac0
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-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://ponafet.ru/wix?keyword=owners+manual+by+vin+number PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4413005/normal_5ffa669e05ef4.pdfIn PDF document text
    • https://cdn.sqhk.co/wodelaganav/Yiegchb/bad_banks_tv_show_review.pdfIn PDF document text
    • http://nuvotana.22web.org/56616058263.pdfIn PDF document text
    • https://cdn.sqhk.co/borefigux/ficjeOE/cut_the_rope_experiments_gold_mod_apk.pdfIn PDF document text
    • http://nubebukexowi.66ghz.com/opencv_c_tutorial_for_beginners.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445107/normal_5ff01285802be.pdfIn PDF document text
    • http://nibumuxadata.66ghz.com/psychology_definition.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408319/normal_604d2d2b82c9f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495976/normal_5fc802d72b38f.pdfIn PDF document text
    • https://cdn.sqhk.co/pulovafafita/6jbidic/snake_zone_worm._io_2020_guide.pdfIn PDF document text
    • http://mizikekow.22web.org/trabajar_cansa_cesare_pavese.pdfIn PDF document text
    • https://cdn.sqhk.co/valujoper/jjdewXX/68017965021.pdfIn PDF document text
    • https://cdn.sqhk.co/tuwetebep/fVibR0c/bricks_and_balls_breaker.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xotepugiz.rf.gd/catalasa_en_tejidos_vegetales.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4be1e933-ca66-4f28-a387-c4cfd9709e4e/homelite_super_2_chainsaw_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4c6150e-71fa-4485-bf02-c66e5030958a/can_dyson_vacuums_be_repaired.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2df4050e-f32b-4c60-a7e6-9364e6d89731/how_to_calculate_vapor_density.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d19b8ef-88f2-41c6-810b-cd030eedee67/blue_yeti_microphone_driver_windows_7.pdfIn PDF document text
    • http://papasebaxot.rf.gd/latest_current_affairs_in_english_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2f8dde4-8b32-4f9d-ad18-4f4be0576032/garmin_vivofit_jr_replacement_band_jb_hi_fi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04343b4c-ac77-4cda-bfb1-e52e4a1c674f/lomalonipukuwitul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/179e5f73-1eee-4f33-bae7-618084392821/rasarimovef.pdfIn PDF document text
    • http://sojopisosifa.epizy.com/tapusajugaserixorew.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_off0000e734.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE734 5252 bytes
SHA-256: 2c1da2fdfe371d01a096b5c4fb4d17a4ad835b6fdc143510b56f0c5b64664ad4
font_01_sfnt_off0000f909.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF909 10132 bytes
SHA-256: 3eb2c586b64e737a9cff4a303c8996b9799e5a9ed14a0cf92413b64535267b22

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