Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bf56c9f3a99305e…

MALICIOUS

PDF

34.1 KB Created: 2020-08-22 16:10:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 925f7c0489702d3497ce169a6eacc787 SHA-1: 1d070eb36c2f4f3ff61bb9acff3d07586a73ed62 SHA-256: 3bf56c9f3a99305e66930be10a49e5a91f375b5b68c6cd5f4b9a485706d59a2a
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to mimic SEO content, directing users to a malicious redirector at ttraff.com. The document body, though partially corrupted, contains text related to a 'Schlage keypad deadbolt programming guide' and references the malicious URL, suggesting a lure to trick users into clicking the link. No scripts were extracted, but the presence of multiple embedded URLs and the malicious redirector indicate a phishing or social engineering attempt.

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=schlage+keypad+deadbolt+programming+guide
    • http://niseruve.programsbyjoe.com/uploads/1/3/0/8/130814411/7204676.pdf
    • https://cdn.shopify.com/s/files/1/0427/6387/8566/files/68427149700.pdf
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/parallels_for_mac.pdf
    • https://cdn.shopify.com/s/files/1/0431/1787/1265/files/accounting_dictionary_english_to_gujarati.pdf
    • https://cdn.shopify.com/s/files/1/0434/5790/4792/files/76819875213.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/97763839953.pdf
    • https://cdn.shopify.com/s/files/1/0430/6649/1042/files/41967133482.pdf
    • https://cdn.shopify.com/s/files/1/0434/3952/1959/files/gozokivinifususebuwelux.pdf
    • https://cdn.shopify.com/s/files/1/0432/0552/5661/files/19025692161.pdf
    • https://cdn.shopify.com/s/files/1/0446/0979/8307/files/mosamugodelipiv.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_off0000482e.bin
3c15ed1405b61987003c88bc4cd2b997babab8d980938281c9cd5c63e1908496		 pdf-font-stream PDF embedded font (sfnt) at offset 0x482E 5720 bytes
font_01_sfnt_off00005b7d.bin
f5e46ec4106634e704989736c893cefbf47f811759843b118b182f542535cc3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B7D 9576 bytes

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