Malicious PDF — malware analysis report

Static analysis result for SHA-256 29fec57d4dfbcf47…

MALICIOUS

PDF

67.0 KB Created: 2020-08-17 07:38:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 185993809088c0eb3b875a95483b3438 SHA-1: 31679aa550eb2b45719ae089eec772a2c4d55500 SHA-256: 29fec57d4dfbcf4704886270dd0c2a78b4a1b41662016f4aa65040d5542266e3
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one pointing to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text suggesting urgency, aligning with the 'SE_URGENCY_LURE' heuristic. The presence of a link farm hosted on Shopify further indicates an attempt to distribute malicious content or redirect users. The primary attack vector appears to be social engineering via a malicious link within the PDF.

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=hepatic+abscess+guidelines
    • http://bemumemif.malteseartist.com/uploads/1/3/2/6/132680813/8e9d7d.pdf
    • https://cdn.shopify.com/s/files/1/0438/2926/4546/files/linixuzedijisipagape.pdf
    • https://cdn.shopify.com/s/files/1/0436/0437/7763/files/gejomewazezusen.pdf
    • https://cdn.shopify.com/s/files/1/0433/7899/9446/files/povusedizi.pdf
    • https://cdn.shopify.com/s/files/1/0436/2525/0974/files/pujuwafesorufosix.pdf
    • https://cdn.shopify.com/s/files/1/0434/3191/9765/files/jogos_para_uma_aprendizagem_significativa.pdf
    • https://cdn.shopify.com/s/files/1/0427/8996/1884/files/18918143926.pdf
    • https://cdn.shopify.com/s/files/1/0431/8982/9800/files/6166970292.pdf
    • https://cdn.shopify.com/s/files/1/0432/0736/0667/files/bexedes.pdf
    • https://cdn.shopify.com/s/files/1/0437/6605/5063/files/59211409146.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b3df.bin
b5a8995aa2d9309d149ff942f6faa993e16a7f06b8406cb56c2c08fe1778b3cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB3DF 5248 bytes
font_01_sfnt_off0000c5b7.bin
3e7a80119b5284fd09d5bd2e2c76c64e5fcb9ecc500c225833d95e462aa912ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC5B7 10804 bytes
font_02_sfnt_off0000ea88.bin
9e1271d681207e96fe60c94df920a27091a957dc81e2614e9e6235263a34fce6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA88 16068 bytes

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