Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e55eada43d24af0…

MALICIOUS

PDF

43.8 KB Created: 2020-09-08 17:16:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77bc04a14ce9d36a930288f934f15022 SHA-1: 636ce8d0905818e785004a12be674d6189fa475b SHA-256: 6e55eada43d24af0deeb132735647f112aa5ba2eafdcb504325f33eb2846dcc5
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'ttraff.me'. The document body, though heavily obfuscated, contains text related to 'Louis dreyfus company suisse annual report', suggesting a lure. The presence of numerous embedded URLs, many pointing to benign Shopify files, alongside the malicious redirector, indicates a link farm or SEO poisoning tactic to disguise the malicious intent. No scripts were extracted, but the primary malicious indicator is the redirector URL.

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.me/wix?keyword=louis+dreyfus+company+suisse+annual+report
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0469/0522/9474/files/idle_poring_guide_swordsman.pdf
    • https://cdn.shopify.com/s/files/1/0435/9267/9582/files/bemapumumovinuvoxojajiz.pdf
    • https://cdn.shopify.com/s/files/1/0430/5187/6509/files/pdf_magazine_reader_online.pdf
    • https://cdn.shopify.com/s/files/1/0427/8249/0791/files/romanticismo_literario.pdf
    • https://static.usrfiles.com/ugd/78c764_d3471d2be62345fa99037d07f544d9f3.pdf
    • https://static.usrfiles.com/ugd/035627_b6f4758b712448658c526313e814f027.pdf
    • https://static.usrfiles.com/ugd/7ef0dc_b349c89ea7da4ee0b7e127cb41485efe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/puneson.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/11800686833.pdf
    • https://cdn.shopify.com/s/files/1/0429/1310/4035/files/xenasuguxe.pdf
    • https://static.usrfiles.com/ugd/289c5e_11bef48898e040e486e634aa36a1991e.pdf
    • https://static.usrfiles.com/ugd/9374a7_3c1a56ba78fc44e9ac239797ee31ab5c.pdf
    • https://static.usrfiles.com/ugd/4ae4db_05b4a05979ff49edadc6983b2f998e1d.pdf
    • https://static.usrfiles.com/ugd/432b07_ffadfffa31184cff8f400902ba1ae4da.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_off00006ccb.bin
7c2f34bc9678ea84751ed36d6ebeb439f6eee3d38fd6b8ba9378c6a1ac5bf9c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CCB 5344 bytes
font_01_sfnt_off00007ef0.bin
1eacdf1987f94bb96ee441801badae4d43720d2625c35fdf9cd32c1d7bc8c9d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF0 10244 bytes

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