Malicious PDF — malware analysis report

Static analysis result for SHA-256 67ab85d372fe2567…

MALICIOUS

PDF

38.1 KB Created: 2020-08-30 11:13:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b10b3ed13baeaeb37b96fabb3d8e3883 SHA-1: 3fc0e4e0feb6574713b364d96d301c6a12c7e85d SHA-256: 67ab85d372fe2567f99c0ef658f4c093f4e95075c3c559908dff0bb00bc590a2
154 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, also contains the same malicious URL. The presence of a large number of external PDF links suggests a link farm or SEO manipulation tactic, potentially to obscure the malicious redirector or host further malicious content. No scripts were extracted, but the PDF structure and embedded links are indicative of a phishing or redirection attack.

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/wix?keyword=fetih+1453+filmi+full+izle
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/0357/6481/files/jisire.pdf
    • https://cdn.shopify.com/s/files/1/0431/4837/8274/files/winibiza.pdf
    • https://cdn.shopify.com/s/files/1/0431/3884/2779/files/accrual_principle.pdf
    • https://cdn.shopify.com/s/files/1/0430/0079/1191/files/different_types_of_computer_network.pdf
    • https://cdn.shopify.com/s/files/1/0437/0815/4008/files/bumavoneritapes.pdf
    • https://cdn.shopify.com/s/files/1/0433/5743/8101/files/xewinedejuma.pdf
    • https://cdn.shopify.com/s/files/1/0432/8757/6740/files/heliocarpus_appendiculatus.pdf
    • https://cdn.shopify.com/s/files/1/0433/0287/9387/files/21332586207.pdf
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/tegijozabijeza.pdf
    • https://static.usrfiles.com/ugd/b8c837_7295b7dca1ec4c1ea5e646ec88bd6e5a.pdf
    • https://static.usrfiles.com/ugd/b8c837_9e6c73a0db134c0095ad4887dd126290.pdf
    • https://static.usrfiles.com/ugd/b8c837_7916537059cc45f88ceacf1d70a4e61d.pdf
    • https://static.usrfiles.com/ugd/b8c837_1a68b588fcee4f509b10402ac94df59f.pdf
    • https://static.usrfiles.com/ugd/c8a981_4a21cc074a934a4ca5ce42dcd96d7c58.pdf
    • https://static.usrfiles.com/ugd/3e87bf_3f19151eed2d4b0f93fb5cda2030f549.pdf
    • https://static.usrfiles.com/ugd/b8c837_ddf5f9b00c734c4c8da90ac4924426b2.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000564f.bin
dbbbe283007246c992f909e700ae10f38d317f9ffd1dc9fa7a0b3b3c20e2d8cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x564F 4956 bytes
font_01_sfnt_off00006732.bin
d49e3d7472b1caffdeccaadb34827f2b9f69c4a35e335964236adb1c71f3605a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6732 10660 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.