Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd05f76c77e61cde…

MALICIOUS

PDF

48.7 KB Created: 2020-09-02 05:04:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d8888fd702de0271680ed5e671edc31c SHA-1: eea3ab894c17023d4871ebf35cabf6d6e355c073 SHA-256: dd05f76c77e61cde8d2931c83ed153106bb4ad4ea18f252d64f6230b6563186c
152 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, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to a 'free online scrabble game' and the malicious URL, suggesting a social engineering lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, one of which is a known malicious redirector.

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=free+online+scrabble+game+without
    • https://cdn.shopify.com/s/files/1/0437/6051/7271/files/39941330725.pdf
    • https://cdn.shopify.com/s/files/1/0431/3504/1702/files/melikikapilejedoxelof.pdf
    • https://cdn.shopify.com/s/files/1/0435/7029/9048/files/zusatomorobizeri.pdf
    • https://cdn.shopify.com/s/files/1/0429/7631/3503/files/face_auth_aadhaar.pdf
    • https://static.usrfiles.com/ugd/daca0d_ccba14387f324b2aa481cdafa5daad86.pdf
    • https://static.usrfiles.com/ugd/565485_49fd44b3b88d4a77a8d41105aa9e43e0.pdf
    • https://static.usrfiles.com/ugd/c3f59f_ee0f5cf723ec4a0786803490df27a778.pdf
    • https://static.usrfiles.com/ugd/b8c837_4e879196731f4fcd8f61cb0a8b758c74.pdf
    • https://cdn.shopify.com/s/files/1/0432/3885/0719/files/repeating_pistol_bloodborne.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18396470220.pdf
    • https://cdn.shopify.com/s/files/1/0431/2766/8890/files/rozuxonotitis.pdf
    • https://cdn.shopify.com/s/files/1/0436/2679/1075/files/callan_method_stage_3_chomikuj.pdf
    • https://static.usrfiles.com/ugd/6240f8_8aa7350aa7b84428b7b6308a7ab3aefa.pdf
    • https://static.usrfiles.com/ugd/0fdb6d_fcd135224f6e4cc9b220cfda74042851.pdf
    • https://static.usrfiles.com/ugd/b8c837_2f64098da796439fb0f2081ca2bbbfc8.pdf
    • https://static.usrfiles.com/ugd/5b9365_4cfa4fcf8afb426aa33f54f09a335a20.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007252.bin
b5544515e22e6694e5fb7aa416115ebbf565c047523f9befd5003542675eb9a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7252 5280 bytes
font_01_sfnt_off0000842b.bin
c53b3f91d85925257090e71e105a0574bce45d35fb065ff3493b118d71c690b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x842B 10372 bytes
font_02_sfnt_off0000a7a3.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA7A3 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.