Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c3ed997107bb929…

MALICIOUS

PDF

42.7 KB Created: 2020-08-17 01:14:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ad84abf917edb2c0916b34a4d54daca SHA-1: 4bdfa5b784417fbacec73e6e055e42310f3b821e SHA-256: 3c3ed997107bb929363cc4c085c931c6563118d482cd6236883cd33ac11e889a
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link farm pointing to a redirector service. The primary URL, 'https://ttraff.com/pify?keyword=example+of+phase+1+biotransformation+reaction+are', is flagged as malicious. While the document body contains garbled text and what appears to be metadata, the presence of numerous links suggests a social engineering lure, likely to direct users to malicious content or phishing sites. No scripts were extracted, but the link farm and redirector indicate a multi-stage 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=example+of+phase+1+biotransformation+reaction+are
    • http://files.birth-roots.co.uk/uploads/1/3/0/7/130775403/732f2836.pdf
    • http://files.christinestockediting.com/uploads/1/3/1/4/131437425/d5346a4197ea91a.pdf
    • https://cdn.shopify.com/s/files/1/0430/3601/6803/files/31017640298.pdf
    • https://cdn.shopify.com/s/files/1/0433/1700/2405/files/63070077109.pdf
    • https://cdn.shopify.com/s/files/1/0429/9954/6010/files/42751664203.pdf
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/sims_4_premade_sims.pdf
    • https://cdn.shopify.com/s/files/1/0436/7787/6377/files/bigekuwezegekanoxuwi.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/konikulad.pdf
    • https://cdn.shopify.com/s/files/1/0450/5151/0936/files/administrative_procedures_act.pdf
    • https://cdn.shopify.com/s/files/1/0430/7812/3669/files/zerulidebazef.pdf
    • https://cdn.shopify.com/s/files/1/0434/6776/7970/files/neporixokusefa.pdf
    • https://cdn.shopify.com/s/files/1/0434/8670/7876/files/ramikedivetolufisoxopuz.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_off00006984.bin
26caf6eb681827622512898fce942e24c2e813ec235a0f32d3c0c0b110c46c8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6984 5472 bytes
font_01_sfnt_off00007c0b.bin
e2f8a61d1420fd0bf243dcf5acd82e8d321ef56bb67a81e8ebc5cfeb683861e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C0B 9908 bytes

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