Malicious PDF — malware analysis report

Static analysis result for SHA-256 008be40945abe345…

MALICIOUS

PDF

47.2 KB Created: 2020-09-17 01:24:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0455fbdee7f1ada6b0eda21ee717c927 SHA-1: f3a1a7ff9a3a2633a8283627a9d4a3848e42c43e SHA-256: 008be40945abe345604e0467e82edbfa7dbf58976fdad1519d6d69b11661a4ee
162 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains references to 'game killer download apk' and includes the malicious redirector URL, suggesting a lure for software download. The presence of a 'download button' heuristic further supports this attack pattern. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.link/wix?keyword=game+killer+download+apk
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/2358/0835/files/augmentative_alternative_communication.pdf
    • https://cdn.shopify.com/s/files/1/0430/7573/1616/files/nuwaworugugebukufox.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84005007378.pdf
    • https://43277db8-aaf7-4cff-8bd8-45ff0fe14fc9.filesusr.com/ugd/accd1f_779f30a1ab6141a581a282a42cb8e186.pdf?index=true
    • https://38d86348-fbd3-4211-84de-ebcd8c8f7fc5.filesusr.com/ugd/12dc78_993d587f131b4a98810f09c76d9df984.pdf?index=true
    • https://d3caf7c6-2e8e-4fa8-afb5-228ca9d4e38d.filesusr.com/ugd/143c98_0e08a2f55a3a4cfd81f0150e74cbcedc.pdf?index=true
    • https://60a39de5-7fe7-4e6e-868a-4429d513f23b.filesusr.com/ugd/ee9d3f_9dbbb2dca6044aa6b683baee99159d24.pdf?index=true
    • https://4c638c2c-a6f7-4ebe-910b-a5077acf26ae.filesusr.com/ugd/ecd213_3eca79243c8044baa47df1960208b190.pdf?index=true
    • https://e629bffd-b3e2-4dc4-90e8-5bf0c7ad9c72.filesusr.com/ugd/ebc5f9_4b96302477c54abb8bf298a2efcaa9c0.pdf?index=true
    • https://1d4eb82a-74c5-4f5e-8bdc-cd3eb099a950.filesusr.com/ugd/8a9bcc_233b1e7f31614566a361999b0039d4e2.pdf?index=true
    • https://3b683638-ed1d-4594-9fe7-3db8b44ca9b2.filesusr.com/ugd/a2de88_95e92bb3ddb04a8f999b29d3206bc2e4.pdf?index=true
    • https://a3404dd4-9d89-4779-b780-6c7dcd5a456b.filesusr.com/ugd/3d7af5_667e82998a2643aeb0affb9e66e14e6b.pdf?index=true
    • https://95ce1cb6-d6a1-4565-a690-1ff907f61df4.filesusr.com/ugd/d13e1f_d9e5059020d34ec2bc53a1e6abbf248e.pdf?index=true
    • https://5a228f77-6167-4858-950a-453e1ca646d2.filesusr.com/ugd/760101_bb3918e33c724a8aa2e2526085852c2e.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a5d.bin
b90d5d0810459cf8d69a8378196cc35732a3a27d091f1232c150526fdb5bb46a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A5D 4592 bytes
font_01_sfnt_off00007a65.bin
39ce3c876610e31a07316356ff37f5bf6a6ca9ccaf9f80bc4e8bb1dfde741d88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A65 5116 bytes
font_02_sfnt_off00008bcc.bin
c06922742e7df2db33c1f6836ad51b702c516a90a73dccc9494323faafee083b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BCC 10468 bytes

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