Malicious PDF — malware analysis report

Static analysis result for SHA-256 369d2506dfa1389e…

MALICIOUS

PDF

36.2 KB Created: 2020-08-30 13:27:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fc96583b5837bc9999b8bd63e7bc8f16 SHA-1: 2aa0f4bfe23716350bb650bacfd9326ae3e14469 SHA-256: 369d2506dfa1389ef200cf575a46747b043f7b997e2fabcacfe64b267261918b
152 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with 30 pointing to a link farm hosted on cdn.shopify.com. A critical heuristic identified one link, 'https://ttraff.com/wix?keyword=his+needs+her+needs+for+parents', as a redirector to known malicious infrastructure. This suggests a phishing or malicious redirection attempt, likely to lure users to a compromised site.

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.com/wix?keyword=his+needs+her+needs+for+parents
    • https://cdn.shopify.com/s/files/1/0440/9711/0168/files/2d_array_c.pdf
    • https://cdn.shopify.com/s/files/1/0433/5114/6649/files/38345221529.pdf
    • https://cdn.shopify.com/s/files/1/0432/4678/0566/files/legal_factum_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/8307/0629/files/vmware_workstation_14_serial_key.pdf
    • https://cdn.shopify.com/s/files/1/0431/8684/7903/files/automatic_star_delta_starter_circuit_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/26450106566.pdf
    • https://cdn.shopify.com/s/files/1/0463/2923/3568/files/friendship_status_hd.pdf
    • https://cdn.shopify.com/s/files/1/0435/8098/1403/files/83555877471.pdf
    • https://cdn.shopify.com/s/files/1/0427/9628/6119/files/handover_letter_format_after_resignation_template.pdf
    • https://cdn.shopify.com/s/files/1/0428/2246/7750/files/wojaradoraj.pdf
    • https://cdn.shopify.com/s/files/1/0434/3146/1016/files/it_s_my_life_lyrics_no_doubt.pdf
    • https://cdn.shopify.com/s/files/1/0431/2226/2178/files/pojozimeserum.pdf
    • https://cdn.shopify.com/s/files/1/0427/7692/0220/files/botudifofefofovikavuzatid.pdf
    • https://static.usrfiles.com/ugd/5cf23b_f2b8e9f442d54d3692067c2cc62acb69.pdf
    • https://static.usrfiles.com/ugd/b8c837_175f96dd976f40d58580415c47c74b16.pdf
    • https://static.usrfiles.com/ugd/a4e402_2f44e2d96ed14e3f9dc0f30a21405d71.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_off0000521c.bin
054daabd43e2c4d042f8982d171eb51aed4bb156a21290ff6c514bc78b67509c
pdf-font-stream PDF embedded font (sfnt) at offset 0x521C 5056 bytes
font_01_sfnt_off00006335.bin
91b6cbff98737e0d9bcb6a663d5b220396e4266366f6d05477af2a820d65c706
pdf-font-stream PDF embedded font (sfnt) at offset 0x6335 9624 bytes