Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff72c61f754711d1…

MALICIOUS

PDF

40.7 KB Created: 2020-08-15 06:18:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3dabe6bd10524a9d1992834f618d0a7e SHA-1: 56dd024c455b8bdf549af131cdd8f91742291454 SHA-256: ff72c61f754711d19e4b2b9e456fd308a0e38554c3662b68e6727e5c8538cc2a
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. This suggests a tactic to manipulate search engine results or to distribute malicious content through a link farm. The presence of the malicious redirector URL indicates an intent to lead the user to harmful content.

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.cc/pify?keyword=esl+zero+and+first+conditional+worksheet
    • http://gadij.henriette-hackenberg.com/uploads/1/3/0/8/130874330/mebexavuzekokudeben.pdf
    • http://files.tregoningandco.com/uploads/1/3/1/0/131069934/b537f43110dfdf.pdf
    • https://cdn.shopify.com/s/files/1/0437/1503/5288/files/gta_5_ps4_price_gamestop.pdf
    • https://cdn.shopify.com/s/files/1/0433/0576/2974/files/48127068026.pdf
    • https://cdn.shopify.com/s/files/1/0436/0273/9362/files/bulk_density_of_concrete.pdf
    • https://cdn.shopify.com/s/files/1/0431/1587/2423/files/85918927487.pdf
    • https://cdn.shopify.com/s/files/1/0430/1576/6177/files/nober.pdf
    • https://cdn.shopify.com/s/files/1/0431/2816/0413/files/15206095318.pdf
    • https://cdn.shopify.com/s/files/1/0433/5996/1239/files/japanese_calendar_2016.pdf
    • https://cdn.shopify.com/s/files/1/0434/3319/7718/files/wetabe.pdf
    • https://cdn.shopify.com/s/files/1/0431/5725/8402/files/bangladesh_population_census_2020.pdf
    • https://cdn.shopify.com/s/files/1/0430/3339/5353/files/25483152634.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_off00006046.bin
56b47b0426801a40545e3bfa645aa08eaa378e9155b0333b2a096c6a3b19539d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6046 5272 bytes
font_01_sfnt_off00007247.bin
85618da896717a4499982c0d39f08630c6aec0cae08a717a6ffdad4cead90106		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7247 10548 bytes

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