Malicious PDF — malware analysis report

Static analysis result for SHA-256 0089e0337b1edf4e…

MALICIOUS

PDF

39.8 KB Created: 2020-09-03 06:49:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 027276a404b96878b04c8cb9d02cc698 SHA-1: 9eff8d9eb9d05b6f7a53dd7be233278feacab1c4 SHA-256: 0089e0337b1edf4ed0ad111b05f4a4e7d63a74e9786e4a3133894255afc937ac
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/wix?keyword=banjara+lambadi+audio+songs+free'. Additionally, it exhibits characteristics of a PDF link farm, suggesting an attempt to distribute malicious content or engage in SEO abuse. The ML classifier strongly supports the malicious nature of this PDF.

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=banjara+lambadi+audio+songs+free
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/1403/6376/files/41025831804.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/49221060197.pdf
    • https://cdn.shopify.com/s/files/1/0428/5572/7260/files/vibowuxatujewiwenobowixu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8189/9944/files/how_to_write_a_great_children_s_book.pdf
    • https://static.usrfiles.com/ugd/c70c35_11d3f00c8556466bacfb3dc25b6de33b.pdf
    • https://static.usrfiles.com/ugd/ca9b0a_1b32030264af4c0b9a45f1951862bce2.pdf
    • https://static.usrfiles.com/ugd/25c42e_bc90f25e62674bffa698301aec49a446.pdf
    • https://static.usrfiles.com/ugd/9ff9b8_e333f45edd754c1396b6411c9718ab65.pdf
    • https://static.usrfiles.com/ugd/269bb8_465c95b91ad84730a831cf98d5c19cd9.pdf
    • https://static.usrfiles.com/ugd/6df952_b85a3f9ea2394736b0fe9d77f2d9dba9.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_off0000521d.bin
f0dcf50f9633ee8632eb0527a46226846fa25f26c750e9afc822abc16d60b3c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x521D 5492 bytes
font_01_sfnt_off000064b9.bin
f7bee8440d6502a720c8176fdac36b87cfd57f63cc64f28f8a92724534dbfc71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64B9 14224 bytes

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