Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7d3a5ee424ff5ff…

MALICIOUS

PDF

40.1 KB Created: 2020-08-28 14:08:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47ffd210ae0efec76ae6ce5be6676ca9 SHA-1: 44401afa90f7ef3324f6335f420eabcf8b9dd570 SHA-256: e7d3a5ee424ff5ff45ddfa4888c8d43680019fb8f0aa23a8cba7caf8e245e455
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.club/pify?keyword=bill+of+rights+worksheet+5th+grade', is designed to lead users to malicious infrastructure. The PDF also contains a large number of external links, many hosted on shopify.com, suggesting a link farm or SEO poisoning tactic to distribute the malicious content. No scripts were extracted, and the document body is heavily obfuscated, but the primary intent appears to be redirecting users to a malicious site.

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.club/pify?keyword=bill+of+rights+worksheet+5th+grade
    • http://files.skyszenith.com/uploads/1/3/2/6/132683088/4402695.pdf
    • http://files.momspantrykitchen.com/uploads/1/3/0/9/130969389/b7e1f438.pdf
    • http://gaxajaxiw.mixfitperformance.com/uploads/1/3/1/4/131483154/kuvitedek.pdf
    • https://cdn.shopify.com/s/files/1/0431/4116/9309/files/lateral_epicondylitis_home_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0432/4448/6811/files/xusotexudapixa.pdf
    • https://cdn.shopify.com/s/files/1/0431/9055/0679/files/anlauttabelle_zum_ausdrucken.pdf
    • https://cdn.shopify.com/s/files/1/0432/2204/0731/files/99665140968.pdf
    • https://cdn.shopify.com/s/files/1/0447/3238/3381/files/ct_ghp_trc_tuyn.pdf
    • https://cdn.shopify.com/s/files/1/0434/0380/4839/files/53820639768.pdf
    • https://cdn.shopify.com/s/files/1/0434/2526/7877/files/gajap.pdf
    • https://cdn.shopify.com/s/files/1/0439/2812/5595/files/cissp_cbk_4th_edition_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/8986/0510/files/arrte_avec_tes_mensonges_gratuit.pdf
    • https://cdn.shopify.com/s/files/1/0439/2140/8168/files/montgomery_ward_5hp_tiller_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/6415/5560/files/zutuvobuz.pdf
    • https://cdn.shopify.com/s/files/1/0451/2422/3141/files/sales_and_marketing_strategy.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_off00005d8d.bin
a4d7ffcf2d0a1c80c92477260ca459cd6d3bc1b6394747266f92e88de951fc94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D8D 5496 bytes
font_01_sfnt_off0000704e.bin
4019ec5e16ce1fd2ee3e2d76a37a6de302e5a7842c2a2b35fd74f8b763f14c81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x704E 10388 bytes

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