Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2ed7b16bdde5d4e…

MALICIOUS

PDF

54.6 KB Created: 2020-08-06 10:42:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 759b2b349993b9c96ff6aa7edfeffb08 SHA-1: 206f7b66d6b1d690f009098197eea1238315f92a SHA-256: b2ed7b16bdde5d4e1fe894c9f7de6f8ff7e2f62f7396f540f92c4afbfe5b5fdf
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wb?keyword=records%20filing%20system%20pdf'. This indicates the document's primary purpose is to trick the user into visiting a malicious URL. The PDF also contains a large number of embedded links, suggesting a link farm or SEO poisoning attempt to distribute the malicious URL.

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/wb?keyword=records%20filing%20system%20pdf
    • http://files.ames-center.com/uploads/1/3/0/7/130775922/gasunezonabojurowiw.pdf
    • http://files.francescalalanne.com/uploads/1/3/1/4/131406291/ab9a0641.pdf
    • http://files.niclasolson.com/uploads/1/3/1/4/131406149/fatilakexavebuwu.pdf
    • http://files.theidealorganization.com/uploads/1/3/1/1/131163738/napek.pdf
    • http://files.peachtreecornersrestaurantweek.com/uploads/1/3/2/7/132710491/628647b7e924.pdf
    • https://cdn.shopify.com/s/files/1/0431/7449/4369/files/3229005933.pdf
    • https://cdn.shopify.com/s/files/1/0432/3488/5796/files/fajizis.pdf
    • https://cdn.shopify.com/s/files/1/0437/6304/0408/files/ramco_cement_manufacturing_process.pdf
    • https://cdn.shopify.com/s/files/1/0432/1984/5284/files/43649916929.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23342697578.pdf
    • https://cdn.shopify.com/s/files/1/0437/2286/6842/files/the_stranger_albert_camus.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/88490257821.pdf
    • https://cdn.shopify.com/s/files/1/0431/8104/7965/files/jomutovuzitujefuder.pdf
    • https://cdn.shopify.com/s/files/1/0433/2499/7800/files/mufitojerevinemapezofudiv.pdf
    • https://cdn.shopify.com/s/files/1/0430/4571/6129/files/getepakumalomikumarofot.pdf
    • https://cdn.shopify.com/s/files/1/0427/7754/2823/files/27814448555.pdf
    • https://cdn.shopify.com/s/files/1/0431/7275/7670/files/90699158499.pdf
    • https://cdn.shopify.com/s/files/1/0434/0757/3157/files/22969164215.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_off00009674.bin
2d040cccd8290b457be153dc988af1f0bde26e388a5a48225545da6e2c62a434		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9674 5376 bytes
font_01_sfnt_off0000a8b9.bin
16555b3cffb3739b2b7d944f27b6893af040040d01689de349b5e1df27eec17a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8B9 10848 bytes

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