Malicious PDF — malware analysis report

Static analysis result for SHA-256 52fd383cfec6910b…

MALICIOUS

PDF

40.8 KB Created: 2020-08-08 20:46:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff5fef7b5b6dbc99c006e7e5d2afc159 SHA-1: c6614d19b4528f1e183625c92b72c0722a3024fe SHA-256: 52fd383cfec6910bc72be353231db7e0d746b4568ad79f582904278c1a5f2245
120 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.cc). This indicates a link farm or SEO poisoning technique used to lure victims. The embedded URL heuristic confirms the presence of a link within the document body. The primary malicious URL is ttraff.cc, which is likely used to redirect users to a further malicious destination.

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=basics+of+serial+communication+pdf
    • http://files.theoriongrouppodcast.com/uploads/1/3/1/6/131606491/zerovuravowov_gososuxenuvimi_nafewulin.pdf
    • http://files.mdlashesllc.com/uploads/1/3/2/6/132682868/boxejumipikag_feporoxosugavog.pdf
    • http://files.nonstoptuning.co/uploads/1/3/0/7/130738614/4768462.pdf
    • http://kunutizu.grannysfudgefactory.ca/uploads/1/3/0/7/130739664/5361339.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pewowa.pdf
    • https://cdn.shopify.com/s/files/1/0432/6254/1982/files/36173141357.pdf
    • https://cdn.shopify.com/s/files/1/0433/8846/9398/files/2051712792.pdf
    • https://cdn.shopify.com/s/files/1/0429/2119/7724/files/zowoviminojozunesi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1947/6896/files/clothing_company_profile.pdf
    • https://cdn.shopify.com/s/files/1/0430/2585/8711/files/96523659664.pdf
    • https://cdn.shopify.com/s/files/1/0435/5863/3631/files/19177701258.pdf
    • https://cdn.shopify.com/s/files/1/0437/7670/4669/files/case_hardening_of_steel.pdf
    • https://cdn.shopify.com/s/files/1/0429/5095/1066/files/31859554436.pdf
    • https://cdn.shopify.com/s/files/1/0433/7316/6744/files/20252777168.pdf
    • https://cdn.shopify.com/s/files/1/0434/6799/7344/files/sajiputamepetozesawaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/8206/3777/files/sijavatev.pdf
    • https://cdn.shopify.com/s/files/1/0431/9812/0096/files/gajabe.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_off000062bf.bin
966cc784a423ccd7a0710d4f842258f871a5b82caa3561258f512374a3c5f4b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62BF 5348 bytes
font_01_sfnt_off000074d8.bin
4bf2d0c16df096ce82393d682f7a8f83aeb7130e5626df66b58959200c98de21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74D8 9740 bytes

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