Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab62d70cc4296271…

MALICIOUS

PDF

52.7 KB Created: 2020-08-31 05:41:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e10f2808e2cb6dccd25b4687627bd38b SHA-1: f7bf67929fb826b99473b35ef41857083fa3dfab SHA-256: ab62d70cc429627167f88e57b9bc5c9f492d622a33d354bcd41bd2ade8d9520c
154 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains the URL https://ttraff.com/wix?keyword=tutorial+blender+bahasa+indonesia+pdf, which is likely the primary lure. The ML classifier strongly indicates maliciousness, and the overall structure suggests a phishing or malware delivery attempt.

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.com/wix?keyword=tutorial+blender+bahasa+indonesia+pdf
    • https://static.usrfiles.com/ugd/9757e7_2c07b20c0616463bada37f62a41a8ead.pdf
    • https://static.usrfiles.com/ugd/b8c837_fc4d593d89d3458f8c6ce36337143781.pdf
    • https://static.usrfiles.com/ugd/76de1a_ab723be7efa74940a5bf510af6eefeab.pdf
    • https://static.usrfiles.com/ugd/b11f6d_37316488b47d424f95f9cac1ea1931e5.pdf
    • https://static.usrfiles.com/ugd/b8c837_5be4f193f219455d8047db8ff99135ce.pdf
    • https://static.usrfiles.com/ugd/4dd980_a51618dc945d46c99423f161bc9f0fc7.pdf
    • https://static.usrfiles.com/ugd/b8c837_24af61ff99ee4c579112b7be2c8b60af.pdf
    • https://static.usrfiles.com/ugd/122077_0e8ca2f4c50c4a7eb207e597ec7167ed.pdf
    • https://static.usrfiles.com/ugd/9ea91e_a76b7bbdf74740f989ce222cd3e413c0.pdf
    • https://static.usrfiles.com/ugd/b8c837_ab7c7bcb4dd4420a91584ebe5a9a0103.pdf
    • https://static.usrfiles.com/ugd/9219f8_2453c8ecdecc48e29341ec16c1a1893f.pdf
    • https://static.usrfiles.com/ugd/b8c837_6836a9617dd74fd388871391ef6bd062.pdf
    • https://static.usrfiles.com/ugd/b8c837_23bc1e9f24024887a160d64430be2cb8.pdf
    • https://cdn.shopify.com/s/files/1/0431/2776/7206/files/laporan_pendahuluan_kista_ateroma.pdf
    • https://cdn.shopify.com/s/files/1/0440/8590/3510/files/braun_differential_equations.pdf
    • https://cdn.shopify.com/s/files/1/0463/1730/6016/files/consumer_credit_reporting_agency_opt_out.pdf
    • https://cdn.shopify.com/s/files/1/0437/0235/4070/files/arqueologia_mexicana_articulos.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008315.bin
fb6e87e33a0798587c4b52cca65276e93efbc2afa60f7fdadf2adc8cf00c70bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8315 5100 bytes
font_01_sfnt_off00009451.bin
0cb03afe6d115b45c4bf303df5e7fbce45c33ce31aed36f82e62d6ab4eca24de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9451 10472 bytes
font_02_sfnt_off0000b7a7.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB7A7 4324 bytes

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