Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d9720b009437587…

MALICIOUS

PDF

42.8 KB Created: 2020-08-08 13:35:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 367fcff8764cbed8315211ea9a0c721a SHA-1: 010edf0c5cd18134386d63dd0e28c829bc0ee14f SHA-256: 0d9720b009437587ff0f9847517dbd192431caeba0ece1abf45d5895f214e854
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic. This suggests the document is designed to lead users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted, and the family is undetermined.

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.ru/pify?keyword=outline+of+the+book+of+acts+pdf
    • http://files.mozart-engine.com/uploads/1/3/0/7/130739916/c3e3049.pdf
    • http://files.allieherrera.com/uploads/1/3/1/3/131379510/sudotuke.pdf
    • http://lejel.synergyfilmmaking.com/uploads/1/3/1/4/131438539/furetugeg.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/6133/7498/files/dire_maul_west_entrance.pdf
    • https://cdn.shopify.com/s/files/1/0432/4763/2548/files/the_ultimate_brush_lettering_guide_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/gonifanus.pdf
    • https://cdn.shopify.com/s/files/1/0433/5281/7832/files/ralivulumorutumin.pdf
    • https://cdn.shopify.com/s/files/1/0436/3180/4574/files/hashmap_big_o.pdf
    • https://cdn.shopify.com/s/files/1/0429/5553/8595/files/magi_the_kingdom_of_magic.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/depuwi.pdf
    • https://cdn.shopify.com/s/files/1/0434/0737/6542/files/xuruvuvuliwesajawolobi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xanixiki.pdf
    • https://cdn.shopify.com/s/files/1/0434/5790/4792/files/15304791921.pdf
    • https://cdn.shopify.com/s/files/1/0431/1023/6314/files/46965877958.pdf
    • https://cdn.shopify.com/s/files/1/0433/4652/6361/files/bukekaxejinaxos.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_off000069a1.bin
ee9b93f82c367b010cb74bd31cb0359a3f741acb41ba56677cc638fa2e4400de
pdf-font-stream PDF embedded font (sfnt) at offset 0x69A1 5380 bytes
font_01_sfnt_off00007be6.bin
e8457a950007f5dfd9e553b0ae113d3d0cd03288bd667eaaa654e4f19ad1dc11
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE6 10156 bytes