Malicious PDF — malware analysis report

Static analysis result for SHA-256 81d260c77f9641cd…

MALICIOUS

PDF

39.8 KB Created: 2020-08-18 23:16:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 679d7b2ccac08a628afd9c6ed789f0d1 SHA-1: 606f5b7b2b865c411a76e002e0731ee0aedd7f6a SHA-256: 81d260c77f9641cdca0b1581084a4d99aa8e96366c6677bb6ec74ae190723988
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=bring+fido+app+android'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The presence of a PDF link farm heuristic further supports the malicious intent, suggesting an attempt to distribute malicious content or engage in SEO abuse. No scripts were extracted, but the embedded URLs and heuristics strongly suggest a phishing or redirection attack.

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.com/pify?keyword=bring+fido+app+android
    • http://parena.teamveventing.com/uploads/1/3/0/7/130776485/3399070.pdf
    • https://cdn.shopify.com/s/files/1/0428/2220/5607/files/3457104402.pdf
    • https://cdn.shopify.com/s/files/1/0429/7680/5023/files/my_boy_gba_emulator_games_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0432/7066/8453/files/folukibodefiwumelozov.pdf
    • https://cdn.shopify.com/s/files/1/0433/7228/2008/files/kusuvadejezenofiziru.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78394199391.pdf
    • https://cdn.shopify.com/s/files/1/0430/0836/0611/files/stalin_sobre_el_materialismo_dialctico_y_el_materialismo_histrico.pdf
    • https://cdn.shopify.com/s/files/1/0429/8620/9443/files/53990028744.pdf
    • https://cdn.shopify.com/s/files/1/0437/5740/4309/files/81555523543.pdf
    • https://cdn.shopify.com/s/files/1/0428/4085/0598/files/63065237594.pdf
    • https://cdn.shopify.com/s/files/1/0436/8737/9094/files/96350174348.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_off00005cdc.bin
04cfef317f57becac55533b14003b9947c96b266d37538b9afbc3aa63e48fd23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CDC 5048 bytes
font_01_sfnt_off00006e17.bin
c86c0d4c68c7a52d1a497c3590082c2823b2c07819a2cacfaf95c48ca47f10f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E17 10956 bytes

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