Malicious PDF — malware analysis report

Static analysis result for SHA-256 b08f15109b273c8d…

MALICIOUS

PDF

51.0 KB Created: 2020-09-01 01:31:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 13b0523c8974a7f14971adedc83c3786 SHA-1: b840602090899307535c53a20c7f3c941b7309fc SHA-256: b08f15109b273c8d31dfbf3cf4f42b24f229a8ad8583dd360653cf4882cd2a33
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, pointing to 'https://ttraff.cc/wix?keyword=eternal+defiance+draft+guide'. This URL is likely intended to lure the user into a phishing or malware distribution site. The document body also contains this URL and a list of other URLs hosted on Shopify, suggesting a link farm or content-luring tactic. The ML classifier also strongly indicated maliciousness.

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=eternal+defiance+draft+guide
    • https://cdn.shopify.com/s/files/1/0429/5468/6620/files/nigetolopobofo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/49605194079.pdf
    • https://cdn.shopify.com/s/files/1/0447/0249/8970/files/the_book_of_enoch.pdf
    • https://cdn.shopify.com/s/files/1/0435/4126/6587/files/sample_cover_letter_for_applying_job.pdf
    • https://static.usrfiles.com/ugd/2ca09c_6815dda062f14ab387723026d2193ccb.pdf
    • https://static.usrfiles.com/ugd/9e41f0_bd877c9858b94c10be1ee55ddba9d405.pdf
    • https://cdn.shopify.com/s/files/1/0432/2571/0750/files/64475633279.pdf
    • https://cdn.shopify.com/s/files/1/0435/6059/9711/files/nokazaneravojepiko.pdf
    • https://cdn.shopify.com/s/files/1/0435/8032/6051/files/80_alkaline_20_acid_food_chart.pdf
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/makalah_bronkitis.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_off00008b54.bin
12578389417c6730d5bcc3b69b5ca425837ad491f6283f9b4f86d5d7966e775b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B54 4968 bytes
font_01_sfnt_off00009c4c.bin
7aa31538998090431cd86f03f027529114104cd0980050b70fa05f1216217922		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C4C 10260 bytes

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