Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc60eeb93b57a336…

MALICIOUS

PDF

38.7 KB Created: 2020-08-14 20:04:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ecaac5b9bde608febc75af382b0993a SHA-1: 2509550957b9ca8d56eb3d56ac17750b805b7e34 SHA-256: cc60eeb93b57a336d12b709af33d2cf80970f173f5819219fde952ac9129a72b
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing for a PDF link farm. One of these links points to a known malicious redirector. The document body contains garbled text but also includes the URL that triggered the redirector heuristic, suggesting an attempt to lure users to malicious content or manipulate SEO. No scripts were extracted from this sample.

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.cc/pify?keyword=lagu+bohemian+rhapsody+lyrics
    • http://files.npmafc.com/uploads/1/3/1/4/131409037/suvumaxaburarug.pdf
    • http://files.sp4climate.net/uploads/1/3/2/6/132682868/wefazod.pdf
    • https://cdn.shopify.com/s/files/1/0429/8607/8369/files/binepavolan.pdf
    • https://cdn.shopify.com/s/files/1/0434/5790/4792/files/ncert_maths_class_8.pdf
    • https://cdn.shopify.com/s/files/1/0429/8774/9525/files/45462617443.pdf
    • https://cdn.shopify.com/s/files/1/0430/5502/2234/files/be_with_you_chords.pdf
    • https://cdn.shopify.com/s/files/1/0446/9299/6252/files/thailand_road_map.pdf
    • https://cdn.shopify.com/s/files/1/0431/5647/1970/files/business_english_module.pdf
    • https://cdn.shopify.com/s/files/1/0435/4434/6792/files/varibeledatupem.pdf
    • https://cdn.shopify.com/s/files/1/0429/2971/7407/files/acetazolamide_davis.pdf
    • https://cdn.shopify.com/s/files/1/0429/1185/8855/files/46647431329.pdf
    • https://cdn.shopify.com/s/files/1/0433/1431/5422/files/construction_risk_assessment_sample.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_off00005858.bin
c518b962f96aebec1663170b621f85ec8604d00233f3577412ed8ee58491b287		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5858 5672 bytes
font_01_sfnt_off00006b7c.bin
bd6746634de0a5a2718bcb9b964d20d4b410933c06a9f3ed56bd5c0b58bf3918		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B7C 10324 bytes

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