Malicious PDF — malware analysis report

Static analysis result for SHA-256 119e9a7d288ef810…

MALICIOUS

PDF

54.1 KB Created: 2020-08-31 03:06:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d7d57ab45e3043d2c039c1595e32ddf1 SHA-1: be99164592975b477c8e4cf24b7ef6b4cc93387d SHA-256: 119e9a7d288ef810ee3c00aa38ab33e963e9f2336825d5d66cf757a7d40ccf34
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to a harmful site. The heuristic 'SE_MFA_LURE' suggests the ultimate goal is likely credential theft or session hijacking. While no scripts were directly extracted, the PDF structure and embedded links are consistent with a phishing lure designed to exploit user trust.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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=bdo+dk+guide+gear
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0463/6255/8619/files/vidmate_app_for_android_2019.pdf
    • https://cdn.shopify.com/s/files/1/0435/9107/3947/files/34002221891.pdf
    • https://cdn.shopify.com/s/files/1/0431/0397/7634/files/18785624217.pdf
    • https://cdn.shopify.com/s/files/1/0440/1342/0702/files/sedegivubesi.pdf
    • https://static.usrfiles.com/ugd/b8c837_a32b667547324476903e0ce391f8835c.pdf
    • https://static.usrfiles.com/ugd/93c935_76663c0476a3490187a30e686bdd444e.pdf
    • https://static.usrfiles.com/ugd/cc14e4_852ef46bc092440d9b6ac23119a0e8d5.pdf
    • https://static.usrfiles.com/ugd/6f58fb_7e7920d641b845eb89d96e9fa4304868.pdf
    • https://static.usrfiles.com/ugd/b8c837_f3cddb0cad2f4dfdb061d0873098eabd.pdf
    • https://cdn.shopify.com/s/files/1/0433/7994/9718/files/nofotijobopuremizimutejo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/guror.pdf
    • https://cdn.shopify.com/s/files/1/0428/8095/8617/files/8985485768.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008d72.bin
650d19f7a8db2f1f29c392a9f1eff04f2a3955eeb95c8b50a3e97a459ba2d67c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D72 4896 bytes
font_01_sfnt_off00009e25.bin
51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E25 1800 bytes
font_02_sfnt_off0000a6b3.bin
9e24780ef5c9cd90081a434846a5bb5401f9d81fc16b4ac793a92972ef19b152		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6B3 10860 bytes

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