Malicious PDF — malware analysis report

Static analysis result for SHA-256 98cbb3c5c6894fad…

MALICIOUS

PDF

53.5 KB Created: 2020-08-09 21:51:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6653d33d26623157042f4104080334b1 SHA-1: e62303888f496695ffd1d83819014b2e8e5321f0 SHA-256: 98cbb3c5c6894fad8e882238449121afc25e494eb9d1e2546eb789651bc44d88
120 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=helical+antenna+pdf'. This suggests the document's primary purpose is to redirect users to malicious content. The presence of many Shopify links, including 'https://cdn.shopify.com/s/files/1/0440/7944/8216/files/aleister_crowley_magick_in_theory_and_practice.pdf', indicates a potential link farm or SEO poisoning tactic to disguise the malicious intent. No scripts were extracted, and the document body was heavily obfuscated.

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=helical+antenna+pdf
    • http://files.simplicitylawnandgarden.com/uploads/1/3/0/7/130739225/divurotetov_mavewevajom.pdf
    • http://files.rockybuttecoffee.com/uploads/1/3/0/7/130775092/zujumebojed.pdf
    • http://files.rajahmaples.com/uploads/1/3/1/3/131397971/fa178c.pdf
    • https://cdn.shopify.com/s/files/1/0440/7944/8216/files/aleister_crowley_magick_in_theory_and_practice.pdf
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/11412397057.pdf
    • https://cdn.shopify.com/s/files/1/0454/3496/2088/files/57155862981.pdf
    • https://cdn.shopify.com/s/files/1/0431/6341/8784/files/pejakerebaweduwogiwarib.pdf
    • https://cdn.shopify.com/s/files/1/0432/4956/5853/files/defejimububinize.pdf
    • https://cdn.shopify.com/s/files/1/0428/3367/4396/files/33359930839.pdf
    • https://cdn.shopify.com/s/files/1/0436/5778/9593/files/regabejifigorixatom.pdf
    • https://cdn.shopify.com/s/files/1/0428/4180/0860/files/kodi_17._3_ipa_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/8415/1974/files/auto_tune_efx_3_crack.pdf
    • https://cdn.shopify.com/s/files/1/0430/1278/4277/files/75847309826.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007511.bin
3f35d810abc79ed6006107056079398bbd1ddbb5a06c31b40665e015ba06f22c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7511 4836 bytes
font_01_sfnt_off0000859b.bin
a45681bc5455c6d74fe14c9d29f647277f25712b7fffed35ae26a959469ad201		 pdf-font-stream PDF embedded font (sfnt) at offset 0x859B 14980 bytes
font_02_sfnt_off0000b435.bin
a765ab2b807528a521c7f74dc7c89b423e19d4879f2e30b2dbbac1367642cd0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB435 16188 bytes

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