Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3981359b9ee2ce2…

MALICIOUS

PDF

44.3 KB Created: 2020-08-05 03:40:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9331d0988a79d22f6ded3919d0295a39 SHA-1: 6a3079e8468ba614128dbf60e0d48336f014aaa5 SHA-256: d3981359b9ee2ce2d077550433830c47c5de16f42a4f3a9bebb1b4c1b22baa48
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link redirects to a known malicious domain (ttraff.ru). This indicates a social engineering attack designed to drive traffic to malicious infrastructure. The document body itself is heavily obfuscated and contains the malicious URL, suggesting it's part of the lure.

Heuristics 3

  • 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.
  • 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=aeroponics+system+design+pdf
    • http://files.perfectlyimperfectcollegian.com/uploads/1/3/0/7/130739069/dobironefivonisalu.pdf
    • http://files.jayforhouse.com/uploads/1/3/0/7/130775400/wipafodozoxam_samigegos.pdf
    • http://files.boydcomics.com/uploads/1/3/1/0/131070152/2007b4089.pdf
    • http://sobuj.capturingcaliforniasflowers.org/uploads/1/3/1/3/131398367/pobulug.pdf
    • http://files.community.jesstopia.org/uploads/1/3/1/3/131381204/5921658.pdf
    • https://cdn.shopify.com/s/files/1/0429/1022/0447/files/pudulok.pdf
    • https://cdn.shopify.com/s/files/1/0444/0326/1606/files/bhagavad_gita_chapter_15_in_gujarati.pdf
    • https://cdn.shopify.com/s/files/1/0428/3292/0732/files/xepuvidirakis.pdf
    • https://cdn.shopify.com/s/files/1/0439/8697/6926/files/46813883943.pdf
    • https://cdn.shopify.com/s/files/1/0428/6529/5526/files/warusomodafofikelalezotem.pdf
    • https://cdn.shopify.com/s/files/1/0430/0419/9075/files/92574441529.pdf
    • https://cdn.shopify.com/s/files/1/0430/4027/6642/files/7778268534.pdf
    • https://cdn.shopify.com/s/files/1/0434/2897/0647/files/best_reader_for_windows_10_reddit.pdf
    • https://cdn.shopify.com/s/files/1/0431/6083/0108/files/sewaboxawovuxigajo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8602/8708/files/the_theory_of_island_biogeography_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/3902/2494/files/80939789795.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/96056065099.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_off00006e2d.bin
355b4a628b99dfda55ca1395cb30aa101b52ae37b7dde0fce875748890f46288		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E2D 5324 bytes
font_01_sfnt_off00008045.bin
91a2293a287bfc7b5634c7b12e6070c27624417952345b440f1e2b24ba0484eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8045 10508 bytes

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