Malicious PDF — malware analysis report

Static analysis result for SHA-256 780e044f83ad9c30…

MALICIOUS

PDF

40.9 KB Created: 2020-07-31 18:37:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f271d20a7e68b8a5a403f637b9794d0 SHA-1: 9924a0dc6bb818f4fcb13eb7405628361f29bf56 SHA-256: 780e044f83ad9c30b449cb43562e126885367a69f602c2c00de8338155a5fa5a
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting PDF files. One prominent link redirects to 'ttraff.com', a known malicious redirector. The document body text, though partially corrupted, includes the same search query found in the redirector URL, suggesting a lure to trick users into clicking the malicious link. The presence of a link farm and a malicious redirector indicates a phishing or content-luring 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=what+are+examples+of+sole+proprietorship
    • http://files.friendsofthetalkeetnalibrary.org/uploads/1/3/1/6/131637402/fofimititewe.pdf
    • http://files.texasheartlandins.com/uploads/1/3/0/9/130969984/9688947.pdf
    • http://files.mingahouse.org/uploads/1/3/0/8/130873822/bcf20877c03.pdf
    • http://files.sersproducts.com/uploads/1/3/2/7/132712129/pebor.pdf
    • http://files.orchardmemorials.co.uk/uploads/1/3/1/8/131871786/2991666.pdf
    • https://cdn.shopify.com/s/files/1/0431/3533/6605/files/8938504798.pdf
    • https://cdn.shopify.com/s/files/1/0429/8578/3447/files/mupotavovibegefin.pdf
    • https://cdn.shopify.com/s/files/1/0434/2258/0886/files/10604941704.pdf
    • https://cdn.shopify.com/s/files/1/0428/8151/5673/files/nikefijinajinosikazizuwo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5481/6667/files/fulopudokupibe.pdf
    • https://cdn.shopify.com/s/files/1/0433/3925/1870/files/31026030581.pdf
    • https://cdn.shopify.com/s/files/1/0429/4891/9459/files/19983594738.pdf
    • https://cdn.shopify.com/s/files/1/0433/4416/7064/files/23083528236.pdf
    • https://cdn.shopify.com/s/files/1/0427/8226/1415/files/funomoziz.pdf
    • https://cdn.shopify.com/s/files/1/0432/6011/7160/files/21418381634.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_off00006172.bin
29d017fd0dd410e4dbcb73a76de5a97190c4c87711c4e99cd25d8bf6336474a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6172 5220 bytes
font_01_sfnt_off0000731b.bin
80f8550d1bdffb8ff25dc4cea5e9593a7f42b5326d0d5b46835b42a3fb0a3f3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x731B 10472 bytes

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