Malicious PDF — malware analysis report

Static analysis result for SHA-256 b601f33feb44dbf4…

MALICIOUS

PDF

42.9 KB Created: 2020-08-12 13:57:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: faf3cf2087f79a7b46ae116bb1986b5d SHA-1: 5fbbff78bf917022d75f7cec2be8fe107133aadc SHA-256: b601f33feb44dbf4bcdb9328238be6adcd01524fd018f80266eb8f075fb801f4
152 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one identified as a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though partially corrupted, contains text related to '3d pdf exporter for navisworks' and a URL, suggesting a lure to entice users to click on the malicious links.

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=3d+pdf+exporter+for+navisworks
    • http://kakaxad.philmortimerdesign.com/uploads/1/3/0/7/130739693/fiwidomoza.pdf
    • http://gogajufi.featherfeettickling.com/uploads/1/3/1/4/131437089/dc463b076484f47.pdf
    • http://files.uccstj.com/uploads/1/3/0/8/130814393/rusudej.pdf
    • http://files.loopmedsupply.com/uploads/1/3/0/8/130873979/munitiromasi.pdf
    • http://files.findingonepiece.com/uploads/1/3/1/4/131406841/4c4aca2148f5.pdf
    • https://cdn.shopify.com/s/files/1/0434/0806/4677/files/rulunabemigeguke.pdf
    • https://cdn.shopify.com/s/files/1/0428/5032/0543/files/bisalloy_400.pdf
    • https://cdn.shopify.com/s/files/1/0431/6430/3522/files/bomazixikes.pdf
    • https://cdn.shopify.com/s/files/1/0429/8794/6133/files/67656241904.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/liwukepurenugiweda.pdf
    • https://cdn.shopify.com/s/files/1/0431/4834/5500/files/bizepajas.pdf
    • https://cdn.shopify.com/s/files/1/0440/2426/6917/files/warhammer_40k_codex_space_wolves.pdf
    • https://cdn.shopify.com/s/files/1/0432/2784/0669/files/46114328142.pdf
    • https://cdn.shopify.com/s/files/1/0431/5827/4205/files/neneruguleribelop.pdf
    • https://cdn.shopify.com/s/files/1/0430/8962/5241/files/12728782823.pdf
    • https://cdn.shopify.com/s/files/1/0430/4420/8789/files/zakorutuxunasipov.pdf
    • https://cdn.shopify.com/s/files/1/0438/3821/0205/files/59013704559.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kofuka.pdf
    • https://cdn.shopify.com/s/files/1/0432/9563/7659/files/76536938827.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_off00006a0d.bin
64a70b095b95770fc4228f01218a2f6f9dd9280d42b8b777d820792bf4c40638		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A0D 5356 bytes
font_01_sfnt_off00007c6b.bin
79f6d829b484c1dc00fcb40adb692db813afb3bb8244e81c5a38691f0d6a99db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C6B 10024 bytes

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