Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8bd87ac0427b1a0…

MALICIOUS

PDF

37.4 KB Created: 2020-08-06 17:29:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e3d152ff5083f0ae2832b56b15ed5c1c SHA-1: 4023b1fa5c8fee14d90382644e038706a03f02d1 SHA-256: e8bd87ac0427b1a0a59ee1f16363d8d87266646c184d9e5110bd618aa0d1c290
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to ttraff.com, which is known for malicious redirection. Additionally, it exhibits a PDF link farm heuristic, embedding numerous links, many hosted on Shopify, to obscure the malicious intent. The document body, though heavily obfuscated, contains the target URL and references to other PDF files, suggesting a lure to download further malicious content or engage in a phishing scheme. The presence of a callback phishing lure heuristic further supports the phishing or scam pretext.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=bergeret+psychologie+pathologique+pdf
    • http://files.woods-n-watertrails.com/uploads/1/3/2/6/132682731/walipedover.pdf
    • http://files.aifby.com/uploads/1/3/0/7/130738572/387353.pdf
    • http://files.otaara.com/uploads/1/3/2/7/132710601/tanesenuwunobob-giniwelunevor.pdf
    • http://files.hurdsfieldnd.com/uploads/1/3/1/6/131606687/6795493.pdf
    • https://cdn.shopify.com/s/files/1/0428/2191/0694/files/fafawusisu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9702/2879/files/26140679966.pdf
    • https://cdn.shopify.com/s/files/1/0431/5476/8032/files/59842248695.pdf
    • https://cdn.shopify.com/s/files/1/0435/0961/2712/files/minecraft_construction_mod.pdf
    • https://cdn.shopify.com/s/files/1/0433/4750/9416/files/wisafatilif.pdf
    • https://cdn.shopify.com/s/files/1/0438/0049/4237/files/93084759943.pdf
    • https://cdn.shopify.com/s/files/1/0429/5986/3961/files/56426258093.pdf
    • https://cdn.shopify.com/s/files/1/0429/7113/6154/files/3851015663.pdf
    • https://cdn.shopify.com/s/files/1/0432/1896/0545/files/learn_french_by_podcast_lesson_1.pdf
    • https://cdn.shopify.com/s/files/1/0428/1496/3868/files/2_storey_residential_building_plan.pdf
    • https://cdn.shopify.com/s/files/1/0431/0358/4409/files/87303493387.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_off00005008.bin
5194f7d995409e38bcaececcbc46867ad9708395fa9304fa89658db6f649ae57
pdf-font-stream PDF embedded font (sfnt) at offset 0x5008 5696 bytes
font_01_sfnt_off00006368.bin
84d0e247248187c5d38345b0f282129b591bdecc5343886e41e9d77465572ec4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6368 10960 bytes