Malicious PDF — malware analysis report

Static analysis result for SHA-256 60a98d4842119f09…

MALICIOUS

PDF

40.6 KB Created: 2020-11-02 04:28:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 829d81c1b08e6ec411b5b28f9f136b50 SHA-1: 93c4273053c70f9480e102338999d60279a68721 SHA-256: 60a98d4842119f094a19b31cc17098bc39e16ab24461eec0a84ef4a26418efd5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains numerous links, including one pointing to a known malicious redirector at `https://ttraff.club/123?keyword=calendar+2020+as+word+document`. The document body also contains this URL and other PDF links, suggesting a link farm or phishing attempt. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs and a malicious redirector link supports this assessment.

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.club/123?keyword=calendar+2020+as+word+document In PDF document text
    • https://fogofude.weebly.com/uploads/1/3/4/3/134322730/a10e203ccd5e1c.pdfIn PDF document text
    • https://luxederobidurip.weebly.com/uploads/1/3/4/6/134603039/0a8458fa85e.pdfIn PDF document text
    • https://vivazezege.weebly.com/uploads/1/3/4/0/134041722/7661914.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7fc9ab9-8692-4407-92c9-69ba28b32496/all_i_want_for_christmas_is_you_pian.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1c6e6ca-b2b8-4839-9591-e4abca86172f/jusux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce1bc969-d1ba-4e80-a926-084ea6551802/30317073284.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21bc1868-7380-466a-b3e4-7c24f63de0cf/75564704172.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/smash_melee_rom_for_slippi.pdfIn PDF document text
    • https://s3.amazonaws.com/sojuravewi/pathfinder_leveling_up_sorcerer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac9a8b0f-9795-4d04-bef9-916cf6149200/14258313379.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6231/3639/files/pafuxavibi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62fb6f24-ffef-4683-aaf7-305d4332b86b/34953590520.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006057.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6057 5356 bytes
SHA-256: af4abecd3484865e95a5a420a978434816fd787828fdb8d45ef56004460adc05
font_01_sfnt_off00007280.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7280 10352 bytes
SHA-256: ed974cb27f695558804895d03fa854d42fd89567f0f2e0328b0fd28a5b3ff78d

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