Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a206c722630b5e1…

MALICIOUS

PDF

41.2 KB Created: 2020-10-31 22:24:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 82bdca5fa79f2d85973b5b28648f9613 SHA-1: 269df0fcc5399faffc0fd16292df98971a9524e5 SHA-256: 2a206c722630b5e1c3232cddf26524c8f05cf3c35f00b03c3d4dbdc7cf2a85e9
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic identifying it as a malicious redirector. One prominent link directs to 'https://ttraff.com/123?keyword=kranal+fiss+location+map', which is flagged as malicious infrastructure. Another heuristic indicates a 'PDF link farm', suggesting the document is designed to host numerous external links, likely to facilitate phishing or distribute further malware. No scripts were extracted, but the presence of malicious links is sufficient evidence.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.com/123?keyword=kranal+fiss+location+map In PDF document text
    • https://gepinizidewepi.weebly.com/uploads/1/3/4/3/134305752/bokasapakuge_foniwelizutana_natarepu_wutujawebawode.pdfIn PDF document text
    • https://lumozilupive.weebly.com/uploads/1/3/4/3/134336046/8055987.pdfIn PDF document text
    • https://xedexebil.weebly.com/uploads/1/3/4/2/134235570/ferosogidoxevado.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/3373854.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/1875/3480/files/fuxelanizevibife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6927/8881/files/redil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/110dd78a-5b65-4ed4-8f03-8adf6731f868/tunaseweni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/4261/7509/files/is_not_a_valid_win32_application_visual_studio_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/horn_antenna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8994/3447/files/bissell_powerlifter_powerbrush_no_suction.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/81403801390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/1373/4309/files/joker_movie_online_watch_dailymotion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/7410/0634/files/25394872610.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/posofefarazuk.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_off000064dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64DD 5132 bytes
SHA-256: ed3767e019d38b27bee4f5aec599dc2c5ded87a093bca4607f46519d067d8c6b
font_01_sfnt_off00007643.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7643 9800 bytes
SHA-256: 5b80c69ed04152dee96fdcb8d2406051bf5bc2c32613b3fe986ec170a6787606

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