Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd8005414fea8ddc…

MALICIOUS

PDF

43.2 KB Created: 2020-08-06 05:56:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76d479f2289532aba69a0cfafee9a4af SHA-1: 8d09fe508369a4515b47425069a2ffa89f354f49 SHA-256: dd8005414fea8ddcefca4088680f09ce3c0aa511644823b5c4994e7b673320b4
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.ru/pify?keyword=anatomy+and+physiology+of+speech+language+and+hearing+pdf'. This suggests a social engineering attempt to lure users to a malicious site under the guise of providing an academic document. No scripts were extracted from this sample.

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=anatomy+and+physiology+of+speech+language+and+hearing+pdf
    • http://files.hedgieloving.com/uploads/1/3/0/7/130740112/2678729.pdf
    • http://wizum.leadingtowellness.com/uploads/1/3/0/8/130874493/lavumuke.pdf
    • http://files.gigikentwellness.org/uploads/1/3/1/3/131398117/8797277.pdf
    • http://files.cbtutoring.com/uploads/1/3/0/7/130775282/wewomenovafotubo.pdf
    • http://files.epgxc.com/uploads/1/3/1/4/131438567/9927068.pdf
    • https://cdn.shopify.com/s/files/1/0433/9243/4326/files/timidikosotuki.pdf
    • https://cdn.shopify.com/s/files/1/0429/6517/2387/files/5_kingdom_classification.pdf
    • https://cdn.shopify.com/s/files/1/0431/9982/4032/files/83610378045.pdf
    • https://cdn.shopify.com/s/files/1/0434/2831/5288/files/5853006977.pdf
    • https://cdn.shopify.com/s/files/1/0427/7351/2359/files/docs_powerpoint_viewer.pdf
    • https://cdn.shopify.com/s/files/1/0428/8076/2023/files/38075993811.pdf
    • https://cdn.shopify.com/s/files/1/0432/5097/4888/files/anchor_hillsong_chords.pdf
    • https://cdn.shopify.com/s/files/1/0432/0172/4580/files/vogubovikalugunobogolapak.pdf
    • https://cdn.shopify.com/s/files/1/0430/5354/7677/files/anthropology_ugc_net_study_material.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/wekiwegoseroxijovana.pdf
    • https://cdn.shopify.com/s/files/1/0435/4677/1607/files/kowux.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_off0000689c.bin
3576065cddca28a01b1d84d5ca37a7c07f95ed959dd1256859964dfe99e3ef3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x689C 5660 bytes
font_01_sfnt_off00007bc5.bin
6751a8dc48fe039eb796e985d34760e660e5628b163366f52061f60dce5bf4c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC5 10464 bytes

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