Malicious PDF — malware analysis report

Static analysis result for SHA-256 96ea436296cc19f9…

MALICIOUS

PDF

62.2 KB Created: 2020-12-01 18:46:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: b16708d46fe6e648baeb972c4e069807 SHA-1: d592c349af31db050cd2fc6ab81e9e22966e903e SHA-256: 96ea436296cc19f93ce23ed18ff71023062148e8a48e7b6695b5eaf41ec6158d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The file is identified as malicious by ML classifiers and ClamAV, with heuristics indicating it functions as a PDF link farm. It contains an external URI pointing to 'traffnew.ru', which is likely a malicious domain used for distributing malware or phishing content. The presence of numerous external links, including one to 's3.amazonaws.com/fapaga/tokefidojobusidu.pdf', suggests an attempt to manipulate search engine results or redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffnew.ru/123?utm_term=modest+bridesmaid+dresses+dusty+blue PDF link annotation
    • https://sewokowoxukipa.weebly.com/uploads/1/3/4/8/134846336/6993223.pdfIn PDF document text
    • https://vebaruroximowut.weebly.com/uploads/1/3/4/3/134342498/vawagerewurezu.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/fapaga/tokefidojobusidu.pdfIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/chemistry_dimensional_analysis_practice_iv_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/number_tracing_worksheets_1-_50.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdfddfcb3e0f577114c44c/1606286816383/powerflex_herbicide_price.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f6bd5687f52b6b817d01/t/5fc18f98145a8629dcebc277/1606520729869/luzujigopudideneju.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ea21e2fce462bc8c0024/t/5fc164dd2dd96f591823adc9/1606509791517/minecraft_horror_maps_apk.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc144a93398ff7515307f21/t/5fc36049173fb5383b0e59d6/1606639689644/el_lado_explosivo_de_jude_saga.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4f117acac6192ab73d49/1606373138592/95755188690.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/formation_chauffeur_de_bus_star_rennes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5ef960b-0b9c-4ada-ac11-de4779930a04/54707144667.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/18th_century_artist_signatures.pdfIn PDF document text
    • https://s3.amazonaws.com/zevutebulaworel/vuwijonaxubatidibol.pdfIn PDF document text
    • https://s3.amazonaws.com/debamijizozexo/chanel_chance_pink_ingredients.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_off0000b885.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB885 5220 bytes
SHA-256: 42db941ff5cffc59ab06fd29727390744fda5bd27a8956ed60d2cd79f6889ee5
font_01_sfnt_off0000ca33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA33 9668 bytes
SHA-256: 19fdb5a7f20902b3e0f6b80b80a8a1ae9e3863daf7a19804401421d59feb1a9e

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