Malicious PDF — malware analysis report

Static analysis result for SHA-256 75e76dff56cb150a…

MALICIOUS

PDF

48.8 KB Created: 2020-08-30 04:01:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ea0e91c1ff6086b903eb9cf2d8c53c7 SHA-1: 58c2ca3ef8c67a8be4f1a9ba7eee59db34a1fa70 SHA-256: 75e76dff56cb150aeb6a2b0c590817dad606448245417354da55167c0c20dde2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one to a known malicious redirector, disguised as a 'good pizza great pizza topping guide'. The heuristic firings indicate this PDF is designed to redirect users to malicious infrastructure, likely as part of a phishing or scam campaign. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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=good+pizza+great+pizza+topping+guide
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0436/3078/8758/files/78489390922.pdf
    • https://cdn.shopify.com/s/files/1/0464/9261/4824/files/78831479992.pdf
    • https://cdn.shopify.com/s/files/1/0449/6493/7896/files/maps_for_minecraft_pe_0._12._1.pdf
    • https://cdn.shopify.com/s/files/1/0431/4601/8967/files/bapemisure.pdf
    • https://cdn.shopify.com/s/files/1/0434/6822/6725/files/beat_it_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0434/5095/7991/files/wiwonixipi.pdf
    • https://static.usrfiles.com/ugd/e3ff21_ec8bec7d136745028c8833894f9df38d.pdf
    • https://static.usrfiles.com/ugd/bae363_a1f6371da5d344ed9182026c0c95d3f8.pdf
    • https://static.usrfiles.com/ugd/b58d21_816ee02786c049059c60a7c56efa42af.pdf
    • https://static.usrfiles.com/ugd/5ad03d_95cfc4de9f3b4649835254739d092713.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d70.bin
0f037332da99aee1aa8b45e8d8513176b7ae7614447a46ec077fa5309e82ebec
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D70 4880 bytes
font_01_sfnt_off00006e29.bin
36f024d4cfabc22f1bf7a81fbe4d49e4df0f86b10d7057717e14ddef5b96bead
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E29 10580 bytes
font_02_sfnt_off0000928b.bin
fb2ac63fb075d256b5587570191ecec806cb29c29da4ebedfc8653ce907d9040
pdf-font-stream PDF embedded font (sfnt) at offset 0x928B 16384 bytes
font_03_sfnt_off0000a854.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xA854 4324 bytes