Malicious PDF — malware analysis report

Static analysis result for SHA-256 12682b0f77ea1487…

MALICIOUS

PDF

46.5 KB Created: 2020-08-06 12:04:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59497ed9d2c79398f17e99af0843ecde SHA-1: 1a7e633a82ddbb8cb924dd407c59ccf41af52041 SHA-256: 12682b0f77ea1487c50fc31c7a2b9f045b0d8b7323d19043c8f47225c7589412
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm and a redirector URL, indicating a phishing or scam attempt. The primary malicious URL, 'https://ttraff.cc/pify?keyword=catalogo+avon+campagna+11+2020+pdf+da+scaricare', is designed to lead users to potentially harmful content. The document body, though partially corrupted, suggests a lure related to a catalog download.

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.cc/pify?keyword=catalogo+avon+campagna+11+2020+pdf+da+scaricare
    • http://files.rileystevens.org/uploads/1/3/1/6/131637695/mogilevel.pdf
    • http://files.steam-skills.org/uploads/1/3/0/8/130813696/febigamufu_zurenokedetat_guzakewitufulu.pdf
    • http://files.adventureswithsonatsays.com/uploads/1/3/1/3/131398246/duverixofefijineme.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/midotikonujeriruzopa.pdf
    • https://cdn.shopify.com/s/files/1/0429/5183/5801/files/jejufi.pdf
    • https://cdn.shopify.com/s/files/1/0435/4323/2661/files/widajibifuturulewuze.pdf
    • https://cdn.shopify.com/s/files/1/0431/5525/9560/files/saveretuxamegufatoguwisan.pdf
    • https://cdn.shopify.com/s/files/1/0431/1695/3767/files/31241864788.pdf
    • https://cdn.shopify.com/s/files/1/0432/5523/4710/files/zizozesiritejodumali.pdf
    • https://cdn.shopify.com/s/files/1/0432/3993/2067/files/60254069511.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58097506778.pdf
    • https://cdn.shopify.com/s/files/1/0439/6145/0654/files/subject_verb_agreement_worksheets_with_answers_7th_grade.pdf
    • https://cdn.shopify.com/s/files/1/0438/3725/9938/files/80456566269.pdf
    • https://cdn.shopify.com/s/files/1/0435/9349/8787/files/78835810045.pdf
    • https://cdn.shopify.com/s/files/1/0431/7039/8368/files/writing_task_ielts_academic.pdf
    • https://cdn.shopify.com/s/files/1/0432/2548/1379/files/applications_of_biotechnology_in_medicine.pdf
    • https://cdn.shopify.com/s/files/1/0430/9227/9445/files/bufijawimutujiweketobik.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072d4.bin
69c17ce684a59597e04dac8aa94bb0b0443ef6dd30e861a7020054564eb7a162		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72D4 5764 bytes
font_01_sfnt_off00008674.bin
8684e2ec6a8cecb13718db05204befa95a66d50de82f1327f87ebd5195d4f38a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8674 11236 bytes

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