Malicious PDF — malware analysis report

Static analysis result for SHA-256 0966f10e0c7e6a94…

MALICIOUS

PDF

39.6 KB Created: 2020-09-03 04:33:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e8e40f94aeb02224212643d58ca9f7d SHA-1: b43b5f27ab50f9d50773326b2ee95691e34eb4ae SHA-256: 0966f10e0c7e6a94a5b9c41e94cb3e695998bf8391c43a12aad436a8ae1f484c
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.me, which is likely used to host phishing pages or distribute further malware. The heuristic 'SE_MFA_LURE' suggests the content is designed to harvest credentials or session tokens by impersonating an MFA prompt. The presence of numerous Shopify-hosted PDF links, while many are benign, indicates a potential link farm used to obscure the malicious destination.

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.me/wix?keyword=e+marksheet+ssc+2019
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/6380/3040/files/25989666750.pdf
    • https://cdn.shopify.com/s/files/1/0433/6022/3397/files/shadowrun_4_character_sheet_fillable.pdf
    • https://cdn.shopify.com/s/files/1/0435/9058/2435/files/nomekafujeterirabi.pdf
    • https://cdn.shopify.com/s/files/1/0427/5693/1751/files/tobipazogujasozik.pdf
    • https://cdn.shopify.com/s/files/1/0447/8559/8615/files/88516880103.pdf
    • https://cdn.shopify.com/s/files/1/0432/3013/4427/files/28634242129.pdf
    • https://static.usrfiles.com/ugd/1f6d71_d133befcfd1a4f40b292640195d73dbb.pdf
    • https://static.usrfiles.com/ugd/76de1a_89ca15e42b73455da9d781a444524c3e.pdf
    • https://static.usrfiles.com/ugd/cc15ef_f3b78103a113419e903fe37744ad4045.pdf
    • https://static.usrfiles.com/ugd/b8c837_161157c80ca949628ceda4d1d843ee1f.pdf
    • https://cdn.shopify.com/s/files/1/0434/7212/6104/files/bourree_bach_guitar.pdf
    • https://cdn.shopify.com/s/files/1/0432/5425/1670/files/47510882695.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_off00005cb8.bin
086f593ab40629b9c550e437266a3ae7b6f7bb082b8c5f49ce7a1465c97f7de2
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB8 5508 bytes
font_01_sfnt_off00006f4a.bin
7d5116e0c117aa6c930a60ffc146a32daa35e2b16eb08482fd16c2f67a0c937b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F4A 10316 bytes