Malicious PDF — malware analysis report

Static analysis result for SHA-256 72369e296feadac2…

MALICIOUS

PDF

41.4 KB Created: 2020-08-31 15:56:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97dea18a399d34f5c187106af3b2513d SHA-1: bdb9b18759bbfda06d5c6923b49f02751989f3e5 SHA-256: 72369e296feadac2b79ebcfc8c7b826560b615920f4031191127c78835d297a9
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.com/pify?keyword=aax+plugins+crack', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to trick users into downloading or accessing cracked software. The presence of numerous other PDF links points to a link farm strategy, likely to obscure the malicious destination.

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/pify?keyword=aax+plugins+crack
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8bbd7_e900d049e40840c1b45c745361f58755.pdf
    • https://static.usrfiles.com/ugd/469aea_7fc6bb5408a4475890818e5f7265a4a5.pdf
    • https://static.usrfiles.com/ugd/63022f_6daaf8245fcf4e1ea5ba628440deaec7.pdf
    • https://static.usrfiles.com/ugd/d162e3_f2f482781fea49e5b0417924862760b8.pdf
    • https://static.usrfiles.com/ugd/10b11f_e97d20621a4348e7bf99ff6e616603b9.pdf
    • https://static.usrfiles.com/ugd/b8c837_725656b0a7a34cee9ba910416be135d2.pdf
    • https://static.usrfiles.com/ugd/9904c2_3f8a888577694ec08fb64a20c52b83a8.pdf
    • https://static.usrfiles.com/ugd/b8c837_645c089ac308464b8c1b746283966581.pdf
    • https://static.usrfiles.com/ugd/10a4aa_6b71f86fd7fb4e979b90e20c0398a4fa.pdf
    • https://static.usrfiles.com/ugd/b8c837_c7453fe166aa421cb9a6576793c7d090.pdf
    • https://static.usrfiles.com/ugd/b8c837_1b66c7751e714042a13b12e666979b85.pdf
    • https://cdn.shopify.com/s/files/1/0448/2557/5581/files/being_there.pdf
    • https://cdn.shopify.com/s/files/1/0434/1720/6946/files/endocrine_society_guidelines_for_testosterone_replacement_therapy.pdf
    • https://cdn.shopify.com/s/files/1/0432/8760/9497/files/88295337096.pdf
    • https://cdn.shopify.com/s/files/1/0435/4169/2570/files/halo_reach_speedrun.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_off00005ff8.bin
2424facca7ad0274be7dcd199eae5e8aeabdf407fe38eafe9f4a9c7abaf75e7f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF8 5220 bytes
font_01_sfnt_off000071d3.bin
7df13cf762ccc1e45d5aa3a485469af16bd347b871ae1c875a9bae1f098953fb
pdf-font-stream PDF embedded font (sfnt) at offset 0x71D3 12264 bytes