Malicious PDF — malware analysis report

Static analysis result for SHA-256 64edc1b4af0b0cd9…

MALICIOUS

PDF

80.1 KB Created: 2021-04-27 00:47:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: db4319d08224b8c8054a17e04ea60f7d SHA-1: 9ffd9c4a60938e5508c4439ea9e7e9b37602f09e SHA-256: 64edc1b4af0b0cd9f6c517c689738f6421b4163d8914d1455524f940b3370775
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 0.9998

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/strik?utm_term=what+is+a+universal+religion+ap+world+history PDF link annotation
    • https://cdn.sqhk.co/zunezafi/pckjbjf/tubonufakixekerizilogi.pdfIn PDF document text
    • https://cdn.sqhk.co/totarujined/bLAVojb/denanutomi.pdfIn PDF document text
    • http://sdfsdfsdf.shaketorch.com/45582200579.pdfIn PDF document text
    • https://cdn.sqhk.co/xenotami/jwgiUgi/exorbitant_synonyme_francais.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/e5ca7cf7-69dc-44a3-b2c6-c53a9704d41b/what_is_the_dash_diet_for_hypertension.pdfIn PDF document text
    • http://rozikumopimi.rf.gd/b-buzzn_vv_twist_instructions.pdfIn PDF document text
    • http://riwugenesujo.epizy.com/free_powerpoint_templates_food.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a85b0dab-c9f1-4498-b9f8-359a310908d4/john_deere_la135_deck_belt_diagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cac61261-71c3-401b-ab8b-16a65083b85e/myers_psychology_for_ap_second_edition_audiobook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/298ec440-19ad-4688-8fa6-270bbb4ea198/japajenofugizagel.pdfIn PDF document text
    • http://loxebexadozivif.rf.gd/17540441748.pdfIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/dobelulapinijupuwidol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f323ef27-fdf5-4ac2-ba06-afc5589ba64a/air_force_1_pixel_color_desert_sand_goat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00eb1d4b-743d-414c-8c82-1e2360c3954e/attack_on_titan_episodes_season_4_episode_5.pdfIn PDF document text
    • http://sawopirorafo.rf.gd/82443215852.pdfIn PDF document text
    • http://zumaborelap.rf.gd/kitchenaid_superba_oven_glass_cleaning.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/dojegedorenumurezanu.pdfIn PDF document text
    • http://wuniwivufe.rf.gd/82937779772.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec41aee6-611c-4099-b82a-34dc6b81e564/garmin_forerunner_110_replacement_band.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f9fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9FB 5488 bytes
SHA-256: 5986243302cf5094fc109b2997d2ea72b06d2a71fd2b74626b488c6393f27156
font_01_sfnt_off00010cc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CC1 11124 bytes
SHA-256: eec24fa4f98c79abc1ab6cb6ed36c72f2c3848d4fa9004869733d47991534226

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