Malicious PDF — malware analysis report

Static analysis result for SHA-256 1956016468cd040d…

MALICIOUS

PDF

46.0 KB Created: 2020-08-20 09:37:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 18cc818f20ffcdd685bdc3ad33e8720c SHA-1: 837d34fe260431c9bf323881a9fabae44cf3feb4 SHA-256: 1956016468cd040d50964d2627ffb96b4da997e87e957c26e21f2e8f074b4107
154 Risk Score

Malware Insights

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

This PDF document contains a link that redirects to malicious infrastructure, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body and embedded link structure suggest a link farm designed to funnel users to potentially harmful content. The presence of multiple Shopify-hosted PDF links, while some are marked benign, indicates a pattern of SEO manipulation for malicious purposes.

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.ru/pify?keyword=bildersuche+r%25C3%25BCckw%25C3%25A4rts+android
    • http://files.carnivora.co/uploads/1/3/2/7/132741375/6016497.pdf
    • http://files.axarcars.com/uploads/1/3/1/4/131409309/6128172.pdf
    • http://kubap.sustainableswansea.net/uploads/1/3/0/7/130776791/favinawurivezo_gajuma_jobitefuguluvub.pdf
    • http://files.dominoeffectdjs.com/uploads/1/3/1/8/131872070/wodejalogipipe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/6694/9786/files/63078862464.pdf
    • https://cdn.shopify.com/s/files/1/0430/0364/2007/files/how_to_convert_radians_to_degrees.pdf
    • https://cdn.shopify.com/s/files/1/0429/4973/8650/files/99904884237.pdf
    • https://cdn.shopify.com/s/files/1/0432/3577/0535/files/88011822460.pdf
    • https://cdn.shopify.com/s/files/1/0431/1253/0081/files/wegamaxit.pdf
    • https://cdn.shopify.com/s/files/1/0431/2793/1029/files/bhojpuri_movie_mp4.pdf
    • https://cdn.shopify.com/s/files/1/0438/1822/1730/files/surgical_anatomy_of_the_heart.pdf
    • https://cdn.shopify.com/s/files/1/0428/9937/4233/files/lorewutifojukijosibu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7889/3214/files/puzamilemufozosezaxive.pdf
    • https://cdn.shopify.com/s/files/1/0433/0130/6526/files/kojovitilizugoxi.pdf
    • https://cdn.shopify.com/s/files/1/0457/3747/6252/files/bakra_bakra_video_song.pdf
    • https://cdn.shopify.com/s/files/1/0435/9805/3539/files/34488648950.pdf
    • https://cdn.shopify.com/s/files/1/0432/3095/3630/files/bovonubakibonitemisobin.pdf
    • https://cdn.shopify.com/s/files/1/0436/9635/7530/files/calculus_12_textbook.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_off0000724a.bin
8c82fcbdda37c032bcb2e8af07c036d5712683a5872cf2667e0c42e8350f30cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x724A 5588 bytes
font_01_sfnt_off0000847d.bin
ed0ca96e7b11d272fcf0b47a0f80ef4cf079585ee23d64ae274245842f103c55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x847D 11052 bytes

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