Malicious PDF — malware analysis report

Static analysis result for SHA-256 10b3c646497a43e9…

MALICIOUS

PDF

56.6 KB Created: 2020-08-31 00:25:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2bc032983ff8251c94d64a7a3859878b SHA-1: e5b26be47fa2cc1d4e688dcbd2acaf5bfa141aec SHA-256: 10b3c646497a43e9a40f1a32ec8e315c6e49916932da59d1dfb9d6ac75e6d069
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm designed to redirect users to malicious infrastructure. One such redirector URL is https://ttraff.com/wix?keyword=valeur+du+point+convention+animation. The document's structure and the presence of numerous external links suggest an attempt to obfuscate malicious intent and potentially lead users to phishing or malware download sites.

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.com/wix?keyword=valeur+du+point+convention+animation
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/ab922d_5fc92992346e45b3aae2402a5582bbcb.pdf
    • https://static.usrfiles.com/ugd/b8c837_9189c0d0b57d498f90bb808ddc05231a.pdf
    • https://static.usrfiles.com/ugd/6d59ab_bee292e9281045d8978d7c7f5141a514.pdf
    • https://static.usrfiles.com/ugd/fef806_0445132a98604bcfbb2a6e558ac04b0d.pdf
    • https://cdn.shopify.com/s/files/1/0438/1537/0912/files/feelings_and_emotions_esl.pdf
    • https://cdn.shopify.com/s/files/1/0428/0041/4883/files/86959116573.pdf
    • https://cdn.shopify.com/s/files/1/0429/1382/4927/files/char_array_in_c.pdf
    • https://cdn.shopify.com/s/files/1/0440/8472/3864/files/sailor_moon_theme_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0438/3725/9938/files/23960700338.pdf
    • https://static.usrfiles.com/ugd/b8c837_b8ee6b17fb5641bd94b5b5786a7b4a0e.pdf
    • https://static.usrfiles.com/ugd/6da380_ec3f99a427934d7c8854fbafb7c3fea4.pdf
    • https://static.usrfiles.com/ugd/ac51ce_c5af30836d9a40ba8a803b3660c0821b.pdf
    • https://static.usrfiles.com/ugd/61b8bf_a4f9d44b0f3b485bb1dcaecb79d15391.pdf
    • https://static.usrfiles.com/ugd/9904c2_fc648f3e12824dd5a0f0058609189f44.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_off00009bc6.bin
64351db47660543e27aee50473193eb2f935b405a589d3dc2301c208062dde2e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9BC6 5068 bytes
font_01_sfnt_off0000acf1.bin
8a734bd1fad511c7bbcd5688bad7476c32c24a4d3c029a569f5b7ffd442af53a
pdf-font-stream PDF embedded font (sfnt) at offset 0xACF1 12512 bytes