Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9453222093e74fa…

MALICIOUS

PDF

44.9 KB Created: 2020-08-27 12:38:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ec7e494c393e34fbe09b891bafef8bd SHA-1: 2fcc7c5c3ea265f741ef265e9730ac5e4d4bdc91 SHA-256: a9453222093e74fa9cf7fb92d6014db7c24c65b357c25b65fd42e3358983168c
128 Risk Score

Malware Insights

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

The PDF file contains a link farm and a malicious redirector URL, suggesting a phishing or scam attempt. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=organic+chemistry+solomons+11th+edit', which is flagged as malicious. The presence of numerous benign Shopify links alongside the malicious one indicates an attempt to disguise malicious activity within a larger link farm. No scripts were extracted from this sample.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=organic+chemistry+solomons+11th+edit
    • http://files.mcrossmantheatre.com/uploads/1/3/1/6/131606262/9098f.pdf
    • http://files.corrythepsychic.com/uploads/1/3/1/4/131407227/duwopib_jesesinasarijuv.pdf
    • http://titomezuf.lizhumestudio.com/uploads/1/3/1/8/131856166/276519.pdf
    • http://files.valeriaflorescano.net/uploads/1/3/1/4/131438240/cd24b9b495795a.pdf
    • http://mebavas.dancetango.ca/uploads/1/3/1/6/131637881/tifuminozuxi.pdf
    • https://cdn.shopify.com/s/files/1/0448/1299/2674/files/atlas_anatomy_book_7th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/3583/6063/files/zomakedanavomuf.pdf
    • https://cdn.shopify.com/s/files/1/0440/5320/1046/files/13371818778.pdf
    • https://cdn.shopify.com/s/files/1/0431/7223/3380/files/videojet_1520_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/7563/3306/files/chemical_bonding_class_11_notes_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/8794/4094/files/27247094297.pdf
    • https://cdn.shopify.com/s/files/1/0463/3523/0114/files/alphabet_chart_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/3847/4397/files/pikawuzenede.pdf
    • https://cdn.shopify.com/s/files/1/0432/1103/0683/files/780141473.pdf
    • https://cdn.shopify.com/s/files/1/0434/6786/6265/files/zawomar.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_off000070d1.bin
c5c50bd986f85c935a67b6b542c5ddb1c11a9a23b810a84f8cd8e27249a7f3a3
pdf-font-stream PDF embedded font (sfnt) at offset 0x70D1 5532 bytes
font_01_sfnt_off0000836e.bin
692f21b9f6dacb18b2b3615e732d08d1b0eb2a5ed6370a736e842c38d54d2495
pdf-font-stream PDF embedded font (sfnt) at offset 0x836E 10184 bytes