Malicious PDF — malware analysis report

Static analysis result for SHA-256 083627d1a962cfd6…

MALICIOUS

PDF

70.1 KB Created: 2020-12-30 00:18:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 685cf9c3188bec55ccd0762c30c725a0 SHA-1: 1f1cfffb9de01c61e328a96fee08d7577554ea96 SHA-256: 083627d1a962cfd67caef7b829e5d636218e7a3f8052d73b015bb688a30b8522
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by a machine learning classifier and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, suggesting a link farm or SEO spamming technique to drive traffic to malicious sites. The primary malicious URL identified is https://trafficel.ru/strik?utm_term=3d+metal+laser+printer+price, which is likely part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafficel.ru/strik?utm_term=3d+metal+laser+printer+price PDF link annotation
    • https://wosumugip.weebly.com/uploads/1/3/4/8/134867897/474ac5611.pdfIn PDF document text
    • https://cdn.sqhk.co/jesuzedavoti/WibXyhF/fodozotefapugex.pdfIn PDF document text
    • https://bejelubizibo.weebly.com/uploads/1/3/4/8/134870507/fatiwanozanar-rawew-xuwirevile.pdfIn PDF document text
    • https://cdn.sqhk.co/sewetotab/dKheORJ/fowijuwivexodorafalale.pdfIn PDF document text
    • https://nokavapeselodes.weebly.com/uploads/1/3/4/6/134638024/866b51ebda67.pdfIn PDF document text
    • https://bumobuzeki.weebly.com/uploads/1/3/4/4/134477779/zajovamafapikadadab.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/0ccdf7ca-81ef-4f9d-81c8-67e38b2ebc58/30425928064.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e0cd504-cba9-40ef-a99c-1fe97a879d0b/67238693556.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e14f02bd-e40f-4fd4-ad83-b587192fdba8/disney_heroes_battle_mode_new_characters.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acaaf03a-7df3-4299-b489-f7043e9b953f/fevelakakav.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/4061796419.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/jefitozejonipa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cd82466-e7cd-40b6-a11f-10b7a0e4bfff/non_poisonous_snakes_in_oregon.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_off0000d660.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD660 5288 bytes
SHA-256: 98751609e9f5e4167004e688a527192497b448872bafb1a9d11a93ef5fca926b
font_01_sfnt_off0000e842.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE842 10380 bytes
SHA-256: 78e53262058934d1ae4e9d42afd0a102abe8574514766c0171f8ca0fcfa97a9c

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