Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c5e713e8ac90eea…

MALICIOUS

PDF

78.4 KB Created: 2021-05-20 20:57:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: df757b82a7926f05a4a59f157763308e SHA-1: df1c38f002e88fad9c7d400c0cc1221d7995cec9 SHA-256: 6c5e713e8ac90eeabd41083079fddf2c0923594a878553e5633fb30527c461d6
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 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.
  • 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/strik?utm_term=codashop+pro+gratis+ff PDF link annotation
    • https://ralanuda.weebly.com/uploads/1/3/0/7/130775203/dc9dc9fee1a.pdfIn PDF document text
    • https://sakaromef.weebly.com/uploads/1/3/4/5/134507496/divazatetof_vaxajuneza_fezukimeg.pdfIn PDF document text
    • https://mitigifagoted.weebly.com/uploads/1/3/5/3/135325532/jasasusemaxef-gareja-gafalofitok.pdfIn PDF document text
    • https://jabenawonidibe.weebly.com/uploads/1/3/5/3/135385032/9500413.pdfIn PDF document text
    • https://kofivenemiwelew.weebly.com/uploads/1/3/1/3/131380814/3ba8ce1abc2b47f.pdfIn PDF document text
    • https://jamakebowixon.weebly.com/uploads/1/3/4/4/134477175/9bad7c3.pdfIn PDF document text
    • https://niwurakoj.weebly.com/uploads/1/3/4/5/134588258/gimekutunap.pdfIn PDF document text
    • https://wijodemarivupi.weebly.com/uploads/1/3/4/8/134861972/katofunonus-dutukaf-wuwupexa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/literature_review_on_typhoid_fever.pdfIn PDF document text
    • https://s3.amazonaws.com/xixonu/fivisigewerit.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/warehouse_floor_safety_signs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/669d468e-01fe-426e-b787-5cbadeea7d0c/what_is_the_setting_of_jack_and_the_beanstalk.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/99619983709.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45212aca-e4b8-4c81-83cf-805d3d393d9a/what_age_can_you_get_your_license_in_ma.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc159c0a-7538-45c1-a60a-192e9cd41347/how_much_does_a_mini_freezer_cost.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/816517d0-598c-4ed0-ba88-827b0ef28403/34916198881.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97933380-c983-4b60-bdf8-a30ff55e86ed/62851870492.pdfIn PDF document text
    • https://s3.amazonaws.com/kiremefegonar/garnier_sheet_mask_charcoal_review.pdfIn PDF document text
    • https://s3.amazonaws.com/jawusawar/domekigimekulosos.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/34875044331.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_off0000f590.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF590 5176 bytes
SHA-256: 6ac8b614d6b835b8b1f57fe12703cc1380e81cc5f3f2900a34a8472a42a1bab7
font_01_sfnt_off00010724.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10724 11052 bytes
SHA-256: e93f95a390c5a73c469864c67375b26156f43f02f34044b4bdaeb53871d9f7c1

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