Malicious PDF — malware analysis report

Static analysis result for SHA-256 3452ff80bfa85334…

MALICIOUS

PDF

39.1 KB Created: 2020-09-03 17:59:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: abee489cba24220912c1e758cb4d0490 SHA-1: 00e9edabc81622b27f41e2312d9e01ffbded8c7f SHA-256: 3452ff80bfa853347c349c038ffd3593bb78824b1b5d0b579cc38df36a178dc8
154 Risk Score

Malware Insights

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

The PDF file contains embedded links that point to malicious redirector infrastructure, specifically 'ttraff.com'. The document body, though heavily obfuscated, contains text related to professional training certificates, suggesting a social engineering lure. The presence of numerous PDF links, many pointing to Shopify domains, indicates a link farm designed to obscure the ultimate destination and potentially spread malicious content.

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/wix?keyword=exemple+attestation+formation+professionnelle
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bofudajix.pdf
    • https://cdn.shopify.com/s/files/1/0431/3497/6157/files/48523569091.pdf
    • https://cdn.shopify.com/s/files/1/0466/3079/7477/files/48917239040.pdf
    • https://cdn.shopify.com/s/files/1/0435/3097/7431/files/vawetexuwijowupawulasu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0413/2508/files/bimoxakebowituz.pdf
    • https://cdn.shopify.com/s/files/1/0431/0358/4423/files/jerozivusu.pdf
    • https://cdn.shopify.com/s/files/1/0429/0471/5427/files/sojojobefilajapikirubi.pdf
    • https://cdn.shopify.com/s/files/1/0435/5427/5479/files/zanesawosasusujurum.pdf
    • https://cdn.shopify.com/s/files/1/0429/2100/1119/files/vapukirexe.pdf
    • https://cdn.shopify.com/s/files/1/0432/8102/3140/files/68618998786.pdf
    • https://cdn.shopify.com/s/files/1/0434/1265/2194/files/ritunozijerudoku.pdf
    • https://cdn.shopify.com/s/files/1/0434/3745/7574/files/pizza_hut_meat_lovers_nutrition_information.pdf
    • https://cdn.shopify.com/s/files/1/0434/3123/1644/files/63092030581.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_off00005c89.bin
31d0729e136181e4c3c94df9297686881732ed17505a1e4ff4536a30ad5d7230
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C89 5072 bytes
font_01_sfnt_off00006dbb.bin
4c3c075607dbd29c56ec58cedd14a2f2c826051fd78bcde49a25842611515855
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DBB 10024 bytes