Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7c295dc8631302a…

MALICIOUS

PDF

38.9 KB Created: 2020-08-23 16:11:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7dd395d427abe0043d2717f848e787bf SHA-1: 7e95d9f72181a35835d0579b73ac79c031c2d4f7 SHA-256: e7c295dc8631302a94f305bc7a8e521122fa65551031c207740ef2e96c110a6e
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one critical heuristic identifying it as a malicious redirector. The primary malicious URL, 'https://ttraff.ru/pify?keyword=big+al%2527+s+fishing+guide+sacramento', is designed to redirect users. Another heuristic indicates a PDF link farm, suggesting a tactic to distribute malicious content or manipulate search engine results. The document body, though partially corrupted, contains text related to 'Big al's fishing guide sacramento', likely a lure to entice clicks on the embedded malicious link.

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.ru/pify?keyword=big+al%2527+s+fishing+guide+sacramento
    • http://bemajirod.belizesportsoutreach.com/uploads/1/3/0/7/130775166/fapomi.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/nenifonomelaparegawoses.pdf
    • https://cdn.shopify.com/s/files/1/0438/5603/6005/files/nedilowob.pdf
    • https://cdn.shopify.com/s/files/1/0437/1418/3323/files/52950590012.pdf
    • https://cdn.shopify.com/s/files/1/0434/5099/0753/files/78572882980.pdf
    • https://cdn.shopify.com/s/files/1/0437/9967/5040/files/aankh_marey_dance_performance.pdf
    • https://cdn.shopify.com/s/files/1/0431/3314/1149/files/buresemanuzodusegojoja.pdf
    • https://cdn.shopify.com/s/files/1/0441/2728/9496/files/gutakorevopan.pdf
    • https://cdn.shopify.com/s/files/1/0437/6965/9549/files/bfs_and_dfs_in_ai.pdf
    • https://cdn.shopify.com/s/files/1/0434/2707/0117/files/air_supply_all_songs_free.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_off000059e4.bin
dcfa92b26188de8aab2e878f77fe060213c32c404016c655a523b88fc10dfa94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59E4 5516 bytes
font_01_sfnt_off00006c78.bin
6c9af7e7adef25840e40cd6dde8fcd1e7ad60b2ef042747f887c4d8a109773ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C78 10188 bytes

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