Malicious PDF — malware analysis report

Static analysis result for SHA-256 291d1789d9a0f0ae…

MALICIOUS

PDF

54.3 KB Created: 2020-08-25 21:33:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 17102f1dee4282f829c16aff961d44ef SHA-1: c3312137cb1d04bd0e774af41d7d60834c74bc47 SHA-256: 291d1789d9a0f0aed606b328c046bbde5f5c1f1ba5f78ec4f0775949fe0e18a5
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a prominent link to 'ttraff.com' which is flagged as a malicious redirector. The document body, though partially corrupted, contains text related to 'Sanam re 2016 full movie mp4 downloa', suggesting a lure for users seeking entertainment content. The presence of numerous links to Shopify-hosted PDFs, some of which are benign, indicates a link farm strategy to potentially obscure the malicious redirector.

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=sanam+re+2016+full+movie+mp4+downloa
    • http://files.iridescentideas.com/uploads/1/3/1/4/131406288/gosunebepupaf.pdf
    • http://ziwenuboz.malcolmmcewan.com/uploads/1/3/1/8/131871674/likedave.pdf
    • http://jilej.recollectionsestatesales.com/uploads/1/3/0/8/130814328/9545134.pdf
    • http://urlgoal.com/j0evgFind
    • https://cdn.shopify.com/s/files/1/0435/2914/2426/files/bsc_maths_book_first_year.pdf
    • https://cdn.shopify.com/s/files/1/0433/8044/1238/files/catalogue_samsung_tv.pdf
    • https://cdn.shopify.com/s/files/1/0435/5335/7985/files/nekuwuvuwivujikawatuzoted.pdf
    • https://cdn.shopify.com/s/files/1/0431/6597/4690/files/39368278351.pdf
    • https://cdn.shopify.com/s/files/1/0427/9920/2467/files/79305243628.pdf
    • https://cdn.shopify.com/s/files/1/0430/0842/6147/files/online_document_converter_to_excel.pdf
    • https://cdn.shopify.com/s/files/1/0429/6340/2905/files/request_for_informational_meeting.pdf
    • https://cdn.shopify.com/s/files/1/0435/9441/6290/files/acuerdo_de_paz_con_las_farc.pdf
    • https://cdn.shopify.com/s/files/1/0428/3075/8054/files/jenibasiwimenuwot.pdf
    • https://cdn.shopify.com/s/files/1/0437/6556/3549/files/jererumozigamivutusetize.pdf
    • https://cdn.shopify.com/s/files/1/0430/0144/6554/files/xejuzako.pdf
    • https://cdn.shopify.com/s/files/1/0465/5487/4006/files/55589854406.pdf
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/a_tale_of_two_cities_oxford_bookworms_stage_4.pdf
    • https://cdn.shopify.com/s/files/1/0431/6345/1560/files/xasulurekiwak.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000942e.bin
8372e1836234ce42af7e9814a4af2ad77237fbdd2077e22e852531450a4a62c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x942E 5832 bytes
font_01_sfnt_off0000a80d.bin
24d12e6145ce69872aa58d7b169ead77f00942f3e949baf5bd6c4e291d4cef0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA80D 10456 bytes

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