Malicious PDF — malware analysis report

Static analysis result for SHA-256 a170c660a0b6041b…

MALICIOUS

PDF

40.1 KB Created: 2020-08-27 23:52:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80a527a74ec7bb05dbfce6014f7546b8 SHA-1: 57ba32ade14561b46ed0c81d828377ecefc5c411 SHA-256: a170c660a0b6041b0e6ab0cb72a8673e3b65f3a6f832500adf0bf33c8950b2c3
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical heuristic firing for a malicious redirector. The document body text, though partially corrupted, includes the phrase "Meat buyers guide 8th edition" and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of numerous embedded links, many pointing to Shopify domains, indicates an attempt to obscure the final 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=meat+buyers+guide+8th+edition
    • http://govowa.jodileeart.com/uploads/1/3/1/4/131454207/mejalazapijumuf.pdf
    • http://wobex.cjtogz.com/uploads/1/3/2/8/132814930/2519035.pdf
    • http://jazuzovib.freeurnsforveterans.org/uploads/1/3/0/8/130874493/8073954.pdf
    • http://files.diagnosingdifference.com/uploads/1/3/1/8/131871416/fb8a018.pdf
    • https://cdn.shopify.com/s/files/1/0430/4489/6917/files/nature_and_scope_of_administrative_law.pdf
    • https://cdn.shopify.com/s/files/1/0437/8551/9255/files/36538405283.pdf
    • https://cdn.shopify.com/s/files/1/0433/1493/8014/files/a_level_maths_edexcel.pdf
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/pewigoworujow.pdf
    • https://cdn.shopify.com/s/files/1/0437/7857/2450/files/xonujijur.pdf
    • https://cdn.shopify.com/s/files/1/0431/9540/0356/files/kefapo.pdf
    • https://cdn.shopify.com/s/files/1/0432/9452/3552/files/ropasurogowilonamo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8373/4943/files/business_process_engineering.pdf
    • https://cdn.shopify.com/s/files/1/0432/0365/7887/files/microeconomics_mankiw_7th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0436/9340/8409/files/blessed_be_your_name_guitar_chords.pdf
    • https://cdn.shopify.com/s/files/1/0438/2323/5232/files/rakomibav.pdf
    • https://cdn.shopify.com/s/files/1/0447/9136/5792/files/benefits_of_fasting_and_prayer.pdf
    • https://cdn.shopify.com/s/files/1/0438/1956/5216/files/42880079152.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_off00005b09.bin
5eca729c88581e0b6c75892866373e48d68d46b241bf5cd4aa53e82863e06f85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B09 5496 bytes
font_01_sfnt_off00006db4.bin
3aead8cb34b91725ffcf83ed66e3a212c1111df22c1b817648313017128a1e4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB4 10728 bytes

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