Malicious PDF — malware analysis report

Static analysis result for SHA-256 77e9406a16b3eed6…

MALICIOUS

PDF

47.7 KB Created: 2020-08-30 05:46:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a97f6d935efebd95e18f08a25ed30931 SHA-1: d2e228584571d9b32f44ccde0a720c0c2592bfae SHA-256: 77e9406a16b3eed66fa4d9389301569310878fa92b70a63e7ead2716c58600f8
154 Risk Score

Malware Insights

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

The PDF contains embedded links, with one critical heuristic identifying it as a malicious redirector. The primary malicious URL, https://ttraff.cc/wix?keyword=donald+duck+lost+in+the+andes+pdf, is likely used to redirect users to a phishing site or download further malicious content. The document body, though heavily obfuscated, contains references to this URL and other benign-looking PDF links, suggesting a deceptive lure.

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.cc/wix?keyword=donald+duck+lost+in+the+andes+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/9e53d4_be7752e27224402f802debbcd1bae4ed.pdf
    • https://static.usrfiles.com/ugd/b8c837_43733c1196504b1db6c4a34a0a534cd8.pdf
    • https://static.usrfiles.com/ugd/b8c837_fa95854cc88841c696f29247252cd6fa.pdf
    • https://static.usrfiles.com/ugd/b8c837_1300050a2801469088c90afe4681e4c0.pdf
    • https://static.usrfiles.com/ugd/1be480_210e5fe490984e1f9476595b4c82f0ef.pdf
    • https://cdn.shopify.com/s/files/1/0429/2198/4166/files/63085440531.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/32923267679.pdf
    • https://cdn.shopify.com/s/files/1/0431/7249/5524/files/jofedinuwozurenakenati.pdf
    • https://cdn.shopify.com/s/files/1/0440/0319/7078/files/50443887243.pdf
    • https://cdn.shopify.com/s/files/1/0436/0775/2866/files/scales_and_arpeggios_aristocats.pdf
    • https://static.usrfiles.com/ugd/40512e_38bbda34dcaf46688b8ee221157a8582.pdf
    • https://static.usrfiles.com/ugd/4dd980_80e6ddadf100480f936763236a746b72.pdf
    • https://static.usrfiles.com/ugd/913720_5406340e136240209be889672a638d45.pdf
    • https://static.usrfiles.com/ugd/dad90e_84e8c6e5f9a84c08bfd9bc9fbec89859.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_off00007c3b.bin
7b8b3cf129b0139b371bc1100cea8ce976fd24646437cb493a7d92020322ae15
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C3B 5208 bytes
font_01_sfnt_off00008df3.bin
1af890b4239c904775cb0ef4bb6aa8fe7235230493441e1884112c9910cefadf
pdf-font-stream PDF embedded font (sfnt) at offset 0x8DF3 10540 bytes