Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd581a8bf1f018c3…

MALICIOUS

PDF

40.0 KB Created: 2020-08-09 01:02:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d6ed23e26f5bf4f7f6a9f43484f93d8 SHA-1: ffa0bd31da40c138a8d5b51e427518285d523a6e SHA-256: bd581a8bf1f018c3ad2e0aecf28e4bcbea82bfb0169f59fcc562ac8d958f99a5
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 a malicious redirector link, suggesting these links are intended to lead users to harmful sites. The document body text, while partially corrupted, includes the string 'Gazetted holidays 2020 in himachal pradesh pdf' and a URL that matches the malicious redirector, reinforcing the lure. 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=gazetted+holidays+2020+in+himachal+pradesh+pdf
    • http://files.soundsofgrace.co.uk/uploads/1/3/1/4/131454090/1089848.pdf
    • http://files.gradeeight.nestmusic.org/uploads/1/3/1/6/131606059/8253348.pdf
    • http://files.h2020-ascimat.com/uploads/1/3/0/8/130874192/9014391.pdf
    • http://files.staceyweckstein.biz/uploads/1/3/2/8/132815872/zinegi_gigidozipa.pdf
    • http://files.lgbadgeryouthfootball.com/uploads/1/3/2/7/132740997/3262011.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/sofitel_brand_standards.pdf
    • https://cdn.shopify.com/s/files/1/0432/0378/8960/files/96731749026.pdf
    • https://cdn.shopify.com/s/files/1/0430/6354/1917/files/types_of_annuities.pdf
    • https://cdn.shopify.com/s/files/1/0428/0185/6668/files/biography_of_famous_personalities.pdf
    • https://cdn.shopify.com/s/files/1/0433/5622/5694/files/tribal_totem_osrs.pdf
    • https://cdn.shopify.com/s/files/1/0431/0630/4162/files/java_programming_questions_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0427/9471/3244/files/kasanobisituwolu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0849/9618/files/gelarif.pdf
    • https://cdn.shopify.com/s/files/1/0432/2004/1886/files/fekutajaju.pdf
    • https://cdn.shopify.com/s/files/1/0428/8295/7478/files/packet_tracer_7._3._2._4.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_off00005304.bin
2e86bc47083cbf9afccfb0ae494466349f5d1b9b8cb31e95cd099da5c428f705		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5304 5852 bytes
font_01_sfnt_off000066e0.bin
f49414002e1e5199c5e42f365fee88ec8fcb5b32cb47c642188c912201359bad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66E0 13940 bytes

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