Malicious PDF — malware analysis report

Static analysis result for SHA-256 90c3e94d5e720024…

MALICIOUS

PDF

48.6 KB Created: 2020-08-19 23:31:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be5e717b0fc563415211889283e11826 SHA-1: 0e811adbbccdc62e89960ed72b8370b668676df3 SHA-256: 90c3e94d5e720024cb6f729e6ed74940051c799071abdc4090d98fea9d0c82c2
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that points to 'ttraff.ru', which is associated with malicious activity. Additionally, the document exhibits characteristics of a link farm, with numerous embedded URLs, many of which are hosted on Shopify but point to potentially malicious content. The presence of a 'download button' heuristic further supports the lure-based attack pattern. No scripts were extracted, but the PDF structure and embedded links strongly suggest a phishing or redirection attempt.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=current+affairs+in+english+with+answer
    • http://giwopo.sprinng.org/uploads/1/3/1/1/131164250/xomejafebu.pdf
    • http://files.greenfieldcommunitychoir.com/uploads/1/3/1/4/131455283/61014.pdf
    • http://files.expiredposters.com/uploads/1/3/1/4/131406337/lutojovitononokamigu.pdf
    • https://cdn.shopify.com/s/files/1/0438/5275/9200/files/dod_interagency_agreement_template.pdf
    • https://cdn.shopify.com/s/files/1/0433/7546/0517/files/13506773068.pdf
    • https://cdn.shopify.com/s/files/1/0433/9879/1322/files/subtracting_mixed_numbers_with_regrouping_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0432/6955/4340/files/94913803279.pdf
    • https://cdn.shopify.com/s/files/1/0431/4490/4865/files/why_did_my_cheesecake_crack.pdf
    • https://cdn.shopify.com/s/files/1/0433/8984/5671/files/powipinimodugubimiw.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/zimomadifulitu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b82.bin
96d6caf99e2bbd0c935d7e4f1e9c1ca800db54bab810c614a7951612096a309c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B82 5024 bytes
font_01_sfnt_off00007ca9.bin
fb637fc2f68a2268a2d39a4c3fd88e53efbbf2ccc3560532f02547141eb20a48		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CA9 10456 bytes
font_02_sfnt_off0000a06a.bin
ebd2804bff382343e08f6a42dc45f69f4e794c08b23908ae60ba78ededae74b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA06A 16164 bytes

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