Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9b428b4697f6abe…

MALICIOUS

PDF

29.7 KB Created: 2020-08-18 17:04:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 172fa43b885a0f9dd006ac78d5b182dc SHA-1: f4ffd831ccea2d410a92ff78d3f71fdfed8964bb SHA-256: b9b428b4697f6abe89a41fcf5c7788fa96889a37408a56ac4b6def6533b7e6ae
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF file is an image-based lure, typical of phishing campaigns. It contains a link to 'ttraff.com', which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains the same product keywords and URLs, reinforcing the phishing lure. The presence of numerous links to Shopify-hosted PDFs suggests an attempt to manipulate search engine results or create a link farm, further indicating malicious intent.

Heuristics 5

  • 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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 29 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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=twin+xlong+fitted+sheets
    • http://files.midlanddjs.com/uploads/1/3/1/3/131398250/2300611.pdf
    • http://files.alllifeisyoga.org/uploads/1/3/1/3/131379296/8206359.pdf
    • http://dawuvose.parisiangypsy.com/uploads/1/3/0/9/130969472/843f814c3a.pdf
    • http://files.safedriving.com/uploads/1/3/1/4/131406060/57040d899.pdf
    • http://files.jerryhilldesigns.com/uploads/1/3/0/8/130814529/ce6d081d36280.pdf
    • https://cdn.shopify.com/s/files/1/0440/3603/0614/files/duzabovofo.pdf
    • https://cdn.shopify.com/s/files/1/0433/2666/8952/files/ropako.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40035930655.pdf
    • https://cdn.shopify.com/s/files/1/0431/5430/9284/files/celestron_manuals.pdf
    • https://cdn.shopify.com/s/files/1/0432/2400/6823/files/90711837139.pdf
    • https://cdn.shopify.com/s/files/1/0432/4871/3896/files/naxasanapakumene.pdf
    • https://cdn.shopify.com/s/files/1/0430/8670/8885/files/foliage_report_west_virginia.pdf
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/voretabufex.pdf
    • https://cdn.shopify.com/s/files/1/0433/4062/8120/files/vofojetizoxudarawodoj.pdf
    • https://cdn.shopify.com/s/files/1/0434/2172/8918/files/jubijoloz.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_off00003f43.bin
e35d8662aa0ba7777a2eca200874349eb31b3b1e19ea2003e824987ec3bdbc2b
pdf-font-stream PDF embedded font (sfnt) at offset 0x3F43 4972 bytes
font_01_sfnt_off00005046.bin
25e78f6822a2b8a5e6f7511d45f34bb19a8433ebf1d49badf95c80868a0732e9
pdf-font-stream PDF embedded font (sfnt) at offset 0x5046 7656 bytes