Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cd753c3ca649a25…

MALICIOUS

PDF

76.1 KB Created: 2020-09-08 08:21:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3031151b73010ed29cea0d145593cce7 SHA-1: 5070581b646f6f8d23f0add6485411186364a22c SHA-256: 7cd753c3ca649a258862ebbac8a033cbaaa8d1b3a174e8571a993cf2e59473a7
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.me/wix?keyword=antiplatelet+therapy+guidelines+ppt`. This URL is presented within the document body, suggesting a social engineering lure disguised as a presentation. The PDF also exhibits characteristics of a link farm, with numerous embedded links, further supporting the malicious intent of redirecting users to external, potentially harmful content. 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.me/wix?keyword=antiplatelet+therapy+guidelines+ppt
    • https://cdn.shopify.com/s/files/1/0433/2421/1354/files/xiniravaselapewemubifujo.pdf
    • https://cdn.shopify.com/s/files/1/0435/1826/3448/files/perimeter_and_area_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0440/5320/1046/files/car_value_app.pdf
    • https://cdn.shopify.com/s/files/1/0430/5967/5290/files/assemblages_bois.pdf
    • https://static.usrfiles.com/ugd/b16523_67bfd0595e4a4c59986c11a2f20ddb42.pdf
    • https://static.usrfiles.com/ugd/479fa9_07ca6ac3a7324cfa9fe42e6898c152c5.pdf
    • https://static.usrfiles.com/ugd/b50c55_8b62319e83904d4fa34262d02d5e78de.pdf
    • https://static.usrfiles.com/ugd/b7ed05_49a6e0edd6ae4e4a8b68ab6c85e88a0d.pdf
    • https://static.usrfiles.com/ugd/d63aaf_547d2096ef6b4fc3b40b74ccb93a04c2.pdf
    • https://static.usrfiles.com/ugd/111c46_bd31458e100d4b38ad4bf2ce67dedc36.pdf
    • https://static.usrfiles.com/ugd/b8c837_47cf9e6eac244b3f9003590006603f2f.pdf
    • https://static.usrfiles.com/ugd/a298ce_5f2348492a3c4e81ac5fafd6a2c4a2ca.pdf
    • https://cdn.shopify.com/s/files/1/0433/8001/5262/files/sunadukila.pdf
    • https://cdn.shopify.com/s/files/1/0437/5366/8769/files/dazejixuko.pdf
    • https://cdn.shopify.com/s/files/1/0437/9980/6113/files/46056519512.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/jekegusaxolefo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6105/1546/files/world_map_black_and_white.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_off0000ea8d.bin
26f4cdbedd8224ac79e9797336672fe56465e994391010f2526334debc2fb5b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA8D 5312 bytes
font_01_sfnt_off0000fc9c.bin
5f53d24661f93393651345d5e8c448a42680d229525fc12516b1d794f78f5fd5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC9C 12100 bytes

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