Malicious PDF — malware analysis report

Static analysis result for SHA-256 36f1c778957cb094…

MALICIOUS

PDF

37.0 KB Created: 2020-08-30 08:01:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 31f67a34d7d158476c3f4d5536231db1 SHA-1: e1241c9f044bbdd32c62f93195ddd3559e2818d7 SHA-256: 36f1c778957cb094fed9a2cdb81a50bb4b4292e5d1e81714878004975ca4c925
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged as malicious by a machine learning classifier and contains a significant number of embedded links, many pointing to a redirector. The primary malicious URL identified is https://ttraff.cc/wix?keyword=bard+guide+ffxiv+reddit, which is likely used to direct users to a phishing or malware site. The document body contains garbled text but also includes the malicious URL and several benign-looking Shopify URLs, suggesting a link farm or SEO poisoning tactic to lure victims.

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=bard+guide+ffxiv+reddit
    • https://cdn.shopify.com/s/files/1/0433/4062/8118/files/structure_of_bacterial_cell_wall.pdf
    • https://cdn.shopify.com/s/files/1/0437/3849/7185/files/tukedefukixato.pdf
    • https://cdn.shopify.com/s/files/1/0433/8273/5006/files/ball_screw_vs_lead_screw.pdf
    • https://cdn.shopify.com/s/files/1/0434/0908/0477/files/lijanusoga.pdf
    • https://cdn.shopify.com/s/files/1/0427/4041/6678/files/gediluwawufifi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sefumiwizekoreletete.pdf
    • https://cdn.shopify.com/s/files/1/0447/2533/8265/files/ancient_meditation_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0431/0050/4217/files/zombie_pigman_skin.pdf
    • https://cdn.shopify.com/s/files/1/0433/6749/7884/files/rominuxavejabelovasuz.pdf
    • https://static.usrfiles.com/ugd/b8c837_e3c088c13cb04a428c58dfef8b604f5f.pdf
    • https://static.usrfiles.com/ugd/8ab72e_46f1aeb8bb6b4735ba73a0da244ac5dc.pdf
    • https://static.usrfiles.com/ugd/b8c837_a00b39fa349240669eb7eb1927b1ac20.pdf
    • https://static.usrfiles.com/ugd/b8c837_07c683f01f4c44509e102f304d117095.pdf
    • https://static.usrfiles.com/ugd/b8c837_fae49135642142e999509e05cca976d6.pdf
    • https://static.usrfiles.com/ugd/b8c837_16bc79f27d614980af6d9261da38c478.pdf
    • https://static.usrfiles.com/ugd/b8c837_c0baa625869d476482b5754e6ae6e8d8.pdf
    • https://static.usrfiles.com/ugd/b8c837_2d41640d3c184fca8f35edf71921ecee.pdf
    • https://static.usrfiles.com/ugd/8127dd_9818a88551424ad29ec9fbc6ac06d8de.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005373.bin
bab62225a4a9f856b84478179e760f4c9e8c23ab6211bdff4e13ca115410afaa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5373 5040 bytes
font_01_sfnt_off000064b5.bin
5fd724b4f57dcf00ea23983715e1d7397dd90f594fea703ca2c74fd6f31c9617		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64B5 9960 bytes

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