Malicious PDF — malware analysis report

Static analysis result for SHA-256 f23a7d92b7087d0c…

MALICIOUS

PDF

37.4 KB Created: 2020-08-04 04:28:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83260159edaef636c3b73d7241dee2c9 SHA-1: a896279df81466c4c6a9de350d9009f66b1c5dff SHA-256: f23a7d92b7087d0c79de3052cd44544bc143037d1eac6f8992d0f9e096fa455c
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=converter+pdf+para+autocad+online+gratis'. This indicates a phishing or scam attempt, leveraging a lure of a free PDF converter. The document also contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm or SEO manipulation tactic to distribute the malicious URL. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive 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.com/pify?keyword=converter+pdf+para+autocad+online+gratis
    • http://files.alphlukaupartners.com/uploads/1/3/0/7/130776490/8200454.pdf
    • http://files.everlastinglovechurch.org/uploads/1/3/0/7/130776388/8470665.pdf
    • http://files.firstdigitalmediaconcepts.com/uploads/1/3/1/3/131381452/wegawotavavivi.pdf
    • http://files.alicelimoges.com/uploads/1/3/1/4/131453453/najodov_vesila_gutawuwoveroruk_kewudovunujip.pdf
    • http://files.tancheewah.com/uploads/1/3/0/7/130739022/puzole_xewusiletemutes_gised.pdf
    • https://cdn.shopify.com/s/files/1/0431/4356/1373/files/98491952539.pdf
    • https://cdn.shopify.com/s/files/1/0432/8115/4198/files/sowibaponepuzigesaw.pdf
    • https://cdn.shopify.com/s/files/1/0427/8507/9452/files/35065862468.pdf
    • https://cdn.shopify.com/s/files/1/0430/7959/8229/files/vizolenarafojegoli.pdf
    • https://cdn.shopify.com/s/files/1/0437/8981/1861/files/puwosisa.pdf
    • https://cdn.shopify.com/s/files/1/0429/7926/2615/files/90780864729.pdf
    • https://cdn.shopify.com/s/files/1/0429/6284/5859/files/81735172107.pdf
    • https://cdn.shopify.com/s/files/1/0431/4457/7178/files/34860352950.pdf
    • https://cdn.shopify.com/s/files/1/0431/2917/6232/files/44342606044.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_off0000507d.bin
9f2c67bf32f63e5489c1c0c7785467c5aeed5e5ca103afc1eeb8d276be53030f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x507D 5288 bytes
font_01_sfnt_off00006293.bin
1caeb3deb4f00e71dbe071c7ea78ff0b30df2483e3abbf1705e042043003a44a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6293 11644 bytes

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