Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9cc62289daca065…

MALICIOUS

PDF

77.6 KB Created: 2021-05-29 21:12:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ea8a3362f7787130d2ed8a0d403ce692 SHA-1: c6dc0cf14b6cb0c3ede577dccdc4128c1487add4 SHA-256: e9cc62289daca065c8507a5aeb914659ef008b7ca032888827315ce35097b19c
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://gimoguvi.ru/strik?utm_term=is+cvt+transmission+better+than+manual PDF link annotation
    • https://xotizirew.weebly.com/uploads/1/3/1/8/131855992/7950653.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370317/normal_5ffa7ea3da0a4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470380/normal_6000cad984169.pdfIn PDF document text
    • https://fenanasu.weebly.com/uploads/1/3/1/3/131384656/diwafi_tobixomo_xirujaxofoze.pdfIn PDF document text
    • https://jotelozaji.weebly.com/uploads/1/3/4/4/134484012/fbb818093b5.pdfIn PDF document text
    • https://palufiboninu.weebly.com/uploads/1/3/6/0/136020493/66da5c30734.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/13200442-277e-459a-86c4-951754d4bfbd/what_is_leave_travel_allowance.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e928a994-7404-4a2a-ba89-2fcb26741de4/zagiwexes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/505863a5-1ace-4662-bd54-e91e30cc8cc3/58486869789.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ad81386-bb86-4492-8e43-efc2388ad575/69485892363.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cfde42a-adc7-4a02-84f1-eaa91fe9ff93/wuvadupapuzuxetisipemije.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86fb0114-09eb-4f01-813a-7ca8ff930b8a/tenozekuvumagexulo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d504bf3-9999-4aaf-870e-e3b2591a5867/delifekogojeserej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/347b2bc7-5a82-4834-980c-e8bfd814e9d6/download_game_gta_v_android_apk_obb.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_off0000f45f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF45F 5176 bytes
SHA-256: 0ee73248d358ff8f00f4d499b429ad87cbfd3626a20fe96c91a0660afc65abeb
font_01_sfnt_off000105d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105D7 10472 bytes
SHA-256: a19c6a794e10544fb63d47f13c19ab9ff80248e1de258ab71a0449d5fc6507c8

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