Malicious PDF — malware analysis report

Static analysis result for SHA-256 33562deb2e9bb745…

MALICIOUS

PDF

41.7 KB Created: 2020-09-17 01:07:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 35c551876969d23c87239a39e1615f74 SHA-1: 5f473787f90e39488f146ba1a21a9dbb93f7cb45 SHA-256: 33562deb2e9bb74582fd54d3156088ddef6228284ade5982244d595473c2189b
152 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as an offer for a free Google Play gift card. This link, 'https://ttraff.club/wix?keyword=new+free+google+play+gift+card', redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The PDF also functions as a link farm, containing numerous other PDF links, many of which are hosted on suspicious domains. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed for malicious redirection.

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.club/wix?keyword=new+free+google+play+gift+card
    • http://pegav.exposeyourmedia.com/uploads/1/3/1/8/131856725/453952.pdf
    • http://sevudeziv.wscottwintrup.net/uploads/1/3/0/7/130738870/mulomifuw-xagokopawuveza-xamada-pepigozew.pdf
    • https://0bfaad4e-7eeb-4321-a88f-0040188dae63.filesusr.com/ugd/3283b0_fce1aca0df9f495d9e6c7d232cd1c97d.pdf?index=true
    • https://9521b4ac-fd85-47b6-a6b8-82eebae47ac9.filesusr.com/ugd/baef12_1812975192914919989cf78d858e14a5.pdf?index=true
    • https://04cdd993-ef3a-4bb3-9d33-2fd91c7f3a6c.filesusr.com/ugd/d2751c_550deb8f988b49f6b52b23ca521b200c.pdf?index=true
    • https://c02ce9cf-b885-457f-bf73-2186701e1b29.filesusr.com/ugd/10b03a_4cb99a2bc5024040b159f1e0533dc0ef.pdf?index=true
    • https://ad0e7b72-c599-41d9-b468-7965154d1a42.filesusr.com/ugd/078c79_0cd2c4421d2a460b8a9fc399cd6dc9bd.pdf?index=true
    • https://93de25ef-3e1c-4246-acb1-4e64503a230c.filesusr.com/ugd/12745a_e3884896052142b49c71e3a6046d09ba.pdf?index=true
    • https://17f29728-5552-4508-87a3-d8fe2c9fe26f.filesusr.com/ugd/e3ed1f_2379848cc2464eec86cce1440475e0ec.pdf?index=true
    • https://71aee221-614e-47ac-b5e8-c86d63ca5995.filesusr.com/ugd/e4f6f0_13ea17d487244ddc9ebd544173f4cf33.pdf?index=true
    • https://38234906-64b8-43ff-971a-6ae4cab3a596.filesusr.com/ugd/3e5db3_baff7d79530f4a468245de5f58a68037.pdf?index=true
    • https://78b26516-0c1b-43e9-8f4d-b4ba5d094cc5.filesusr.com/ugd/c88839_ad2c94c636d94259bf32f83b1e1af1c0.pdf?index=true
    • 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_off000064d4.bin
024886508982886e65b8b8407ac40c2ce34e8d3612a8fef6473828f25b0f3685		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64D4 5308 bytes
font_01_sfnt_off00007719.bin
6224d24e4f8abb1a3470131272905c1de6a91d2d6e174c5ed1053ee9a2e60a93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7719 10352 bytes

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