Malicious PDF — malware analysis report

Static analysis result for SHA-256 162b9202169cebd8…

MALICIOUS

PDF

39.7 KB Created: 2020-08-28 10:27:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c5b31d30341314e910d3521e9053f521 SHA-1: 9a4c3818db8561897f423ded3eb6337510e9e074 SHA-256: 162b9202169cebd8a6387ccc9406bbea8a046e75245089e5744d2438a0f393d4
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing for linking to known malicious redirector infrastructure, specifically 'ttraff.com'. The document body also contains this URL, suggesting an attempt to trick users into visiting it under the guise of downloading content. The presence of numerous other PDF links, many pointing to Shopify domains, further supports the link farm heuristic, indicating a potential SEO-based lure.

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/pify?keyword=smash+ultimate+xci
    • http://gunetoz.exorcismdetailing.com/uploads/1/3/1/4/131453433/133e7364.pdf
    • http://files.lovethetruth.co.uk/uploads/1/3/1/0/131069934/481a6caf9a.pdf
    • http://files.bostemp.us/uploads/1/3/2/7/132712306/junimapogalud-jadodezavinole-bibovafafuf.pdf
    • http://lutine.gabrielsartkids.com/uploads/1/3/1/6/131606127/554a9d456.pdf
    • http://files.worxforms.com/uploads/1/3/2/7/132740764/kakerugonames_jukufamepenib_fedabudifib_lomudigesupoda.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/6767/8618/files/for_dummies_collection_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/5082/7929/files/74384545759.pdf
    • https://cdn.shopify.com/s/files/1/0429/8784/7843/files/voxezikosakukebavenukere.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lalosukiwafigoledexefes.pdf
    • https://cdn.shopify.com/s/files/1/0431/6931/7020/files/zurabevepuwexu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fodafozisejuleluz.pdf
    • https://cdn.shopify.com/s/files/1/0434/4987/6630/files/88667310535.pdf
    • https://cdn.shopify.com/s/files/1/0431/3474/6790/files/16565779524.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005184.bin
76cd44679cff2239b8f31fcd987150e83b58c1ed1e2ce4aac881906fdbafb8ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5184 4780 bytes
font_01_sfnt_off000061c0.bin
d390253ad7d76edd2b2b989f8a140fbdb6eaaee9b8fcf97da27a5c783794e760		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61C0 10100 bytes
font_02_sfnt_off0000845c.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x845C 4324 bytes

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