Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e4b482fecbd2016…

MALICIOUS

PDF

45.1 KB Created: 2020-08-31 15:13:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c86e18e671813050a8808da4cada520b SHA-1: 137489759c7a1d7846c5ff4281a2cb1e1cc369f1 SHA-256: 2e4b482fecbd20163dfcc750081989ad7ff188fd43ba0f2138027704a9bb3391
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to external PDF files hosted on Shopify and other domains. One of the primary links, https://ttraff.ru/pify?keyword=central+drakensberg+weather+report, is flagged as a known malicious redirector. This suggests the document is part of a link farm or SEO manipulation scheme, potentially designed to distribute malware or lead users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=central+drakensberg+weather+report
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nanejixiv.pdf
    • https://cdn.shopify.com/s/files/1/0433/9623/5415/files/le_journal_el_watan_d_aujourd_hui.pdf
    • https://cdn.shopify.com/s/files/1/0427/7692/0220/files/generative_adversarial_networks_cookbook_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/4528/1183/files/wrex_family_armor.pdf
    • https://cdn.shopify.com/s/files/1/0431/5663/5804/files/bidaai_movie_songs.pdf
    • https://cdn.shopify.com/s/files/1/0431/8212/9320/files/double_arrow_keyboard.pdf
    • https://cdn.shopify.com/s/files/1/0441/2253/8136/files/management_and_organizational_behaviour_ou_syllabus.pdf
    • https://static.usrfiles.com/ugd/7ea8bb_031b6c5a781d4f599d6f48697837fc82.pdf
    • https://static.usrfiles.com/ugd/9219f8_1d12b0e9af0e4890a3709d949639a090.pdf
    • https://static.usrfiles.com/ugd/a86d68_d13f1c4f9df44f5aab7343b675a355ef.pdf
    • https://static.usrfiles.com/ugd/b8c837_1db9cf71629548d7b3dc077b23ff0c00.pdf
    • https://static.usrfiles.com/ugd/3bf302_bb8b65b3463e456387e3236698073a7f.pdf
    • https://static.usrfiles.com/ugd/ba3095_63d5357296434ab58b545c4033f10035.pdf
    • https://static.usrfiles.com/ugd/eed56f_7435d1ed2716421dab0e52ce7626ee2e.pdf
    • https://static.usrfiles.com/ugd/b8c837_0c071499630f4da8a037e399882d5f86.pdf
    • https://static.usrfiles.com/ugd/b8c837_3863ac9ee1d946b68e928ecc203affc0.pdf
    • https://static.usrfiles.com/ugd/b8c837_1512ae6ecc66488b957fa3168e99f87c.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_off0000619b.bin
7a7312cac3f60a56544f6c154d84e19c66b60c1492aaa89ce92c1435daaedf95		 pdf-font-stream PDF embedded font (sfnt) at offset 0x619B 5424 bytes
font_01_sfnt_off0000740d.bin
df6df8b106a54143ac346cd4b828876219f6de3985ae9222d8b6e54dbd23ed83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x740D 15944 bytes

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