Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ad9d6187dcdfdd0…

MALICIOUS

PDF

62.9 KB Created: 2020-09-02 05:41:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cf29685e9b7c608b723eec9b4995e0ff SHA-1: b8434376b0020e48a71406c7443f8b3215d9c46d SHA-256: 0ad9d6187dcdfdd08c8c1c08f3eafc1c06e510b0c48947670b684f5c3aac9916
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which points to a known malicious redirector infrastructure. The document body and embedded links suggest a lure related to a song title, likely intended to draw users into a link farm or SEO scam. The ML classifier strongly indicated maliciousness, supporting the presence of malicious links.

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.ru/wix?keyword=channa+ve+ghar+aaja+ve+song
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/c63dba_05aa710123614c6e9759fd469fafca3b.pdf
    • https://static.usrfiles.com/ugd/b4609a_c4faa9bc2e4540ce9438e30c5f0a5d73.pdf
    • https://static.usrfiles.com/ugd/b8c837_fab259615d8f4c029b38d19872f67ee8.pdf
    • https://static.usrfiles.com/ugd/b7306e_46e2acf3d3dd49dd86a1aa34bb62ac17.pdf
    • https://static.usrfiles.com/ugd/b8c837_de39db9160a14e5b852ed7e15ec69196.pdf
    • https://static.usrfiles.com/ugd/b8c837_1154e8dfc2314780b91c9176189f6f26.pdf
    • https://static.usrfiles.com/ugd/4dd980_dd22e10390f04b6fbb0a875720edec73.pdf
    • https://static.usrfiles.com/ugd/d2751c_3e298855f08c4ebfabed6ae55731a72c.pdf
    • https://static.usrfiles.com/ugd/2dbf5a_4f3a494c2ca74f4c99120628002f9b7c.pdf
    • https://static.usrfiles.com/ugd/865d50_9f69d108137b4da99d81e620d90eec24.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/
    • http://scripts.sil.org/OFL
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNU
    • http://www.gnu.org/copyleft/gpl.htmRegular

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008b97.bin
8b6361cda6105f9b541aa82519328bbf2386837e1367e39269f2fae21746644b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B97 4732 bytes
font_01_sfnt_off00009ba3.bin
9830826cf67211c76ad85778b813f5eeb8502c2cf37498fe7f9cf6e429f336e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BA3 5548 bytes
font_02_sfnt_off0000ad9e.bin
23b67d792bc5705556e18730dc9bc6fd7215364875016b3d48e7f6145e7f13ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD9E 16864 bytes
font_03_sfnt_off0000dea6.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDEA6 4324 bytes

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