Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc5dcbc8b732abe…

MALICIOUS

PDF

53.1 KB Created: 2020-07-29 19:31:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c43ab4631529715b022109e0dadc1be SHA-1: 363f960bc4232543ec24d0f86b86116948225bf5 SHA-256: 1dc5dcbc8b732abec5c4c2eaad08dd2edcb62caed0627cfd0c891f4b71d359cb
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, appears to be a lure related to 'security officer interview questions'. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a phishing or malware distribution site.

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=security+officer+interview+questions+and+answers+pdf
    • http://files.sanctuaries.org/uploads/1/3/1/8/131856443/jebegesogitesol.pdf
    • http://files.shsu-catholic.org/uploads/1/3/0/7/130740026/2b330b993e486.pdf
    • http://files.sapbushfarmstore.com/uploads/1/3/0/7/130775635/7885752.pdf
    • http://files.simonlumby.co.uk/uploads/1/3/0/7/130775907/1216118.pdf
    • https://cdn.shopify.com/s/files/1/0430/2385/9873/files/65654685295.pdf
    • https://cdn.shopify.com/s/files/1/0432/6624/4766/files/17260110598.pdf
    • https://cdn.shopify.com/s/files/1/0429/0134/0319/files/49285745430.pdf
    • https://cdn.shopify.com/s/files/1/0433/8352/1445/files/jusofukedulalumewitutiga.pdf
    • https://cdn.shopify.com/s/files/1/0428/3521/4503/files/mosuworix.pdf
    • https://cdn.shopify.com/s/files/1/0435/3540/1112/files/25057448033.pdf
    • https://cdn.shopify.com/s/files/1/0432/5556/2398/files/semofonatexeni.pdf
    • https://cdn.shopify.com/s/files/1/0431/9340/1501/files/80519622549.pdf
    • https://cdn.shopify.com/s/files/1/0431/2858/6402/files/xubirizasinazalufozu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6255/0940/files/natovamekabonexagokiv.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_off000091d6.bin
4ad5ef3c7791146ea9361486029a4af2cfba6305996f9445f443660bbc43b3ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91D6 5484 bytes
font_01_sfnt_off0000a49c.bin
5eddc6791dda186f35f41c7f175ad028b41511bf3e4fe633021750942ac9b315		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA49C 10136 bytes

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