Malicious PDF — malware analysis report

Static analysis result for SHA-256 a11d21a5b58be419…

MALICIOUS

PDF

38.7 KB Created: 2020-08-01 09:38:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8aa4d4ea3da712097f12b25de1502acc SHA-1: 65a6e85f19a4a65f5816075421d2cd44d7768753 SHA-256: a11d21a5b58be4197333c7a373d84331e7894c1bd54bfb4af5ec83adb255d004
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to 'ttraff.ru', identified as malicious. The document body, though heavily obfuscated, contains text related to 'Full program indir' and the malicious URL, suggesting a lure for users seeking software. The presence of a malicious redirector link indicates the document is designed to lead users 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.ru/pify?keyword=full+program+indir
    • http://files.lyonhappinesscoaching.fr/uploads/1/3/1/4/131407106/c0e059070fe1.pdf
    • http://files.carolinehartzell.com/uploads/1/3/1/3/131397996/5293302.pdf
    • http://files.kristygloverportfolio.com/uploads/1/3/0/7/130776120/52109c98816.pdf
    • http://files.hijabiballers.com/uploads/1/3/1/3/131398555/7218778.pdf
    • https://cdn.shopify.com/s/files/1/0439/7786/7422/files/buxebemunelasaxi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/28403748239.pdf
    • https://cdn.shopify.com/s/files/1/0427/7973/8278/files/puscifer_the_mission_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0429/9417/2058/files/95175420129.pdf
    • https://cdn.shopify.com/s/files/1/0431/8891/2290/files/komuneminazomaxobugebuvom.pdf
    • https://cdn.shopify.com/s/files/1/0440/4979/3174/files/suxudaxevozomovem.pdf
    • https://cdn.shopify.com/s/files/1/0440/0129/6534/files/jaworeniwux.pdf
    • https://cdn.shopify.com/s/files/1/0431/7750/9020/files/jisimasasogenudires.pdf
    • https://cdn.shopify.com/s/files/1/0431/1567/5815/files/nopiwi.pdf
    • https://cdn.shopify.com/s/files/1/0433/2906/1014/files/70802287916.pdf
    • https://cdn.shopify.com/s/files/1/0440/2901/8262/files/fabevejatolefefukawo.pdf
    • https://cdn.shopify.com/s/files/1/0434/2009/0535/files/35429146875.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_off00005b22.bin
061bbeeae74d254f51729f407556ca55c787ce26caa305a010e357331ec925ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B22 5056 bytes
font_01_sfnt_off00006c3c.bin
9c60fedc0b1ba2a3ebd6e9fcbfa370a5fbaa0fe825c86449859561d083c615a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C3C 9972 bytes

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