Malicious PDF — malware analysis report

Static analysis result for SHA-256 150cf515acb343ec…

MALICIOUS

PDF

70.6 KB Created: 2020-08-21 00:57:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dadc5641ded6f170a509042b4d5c1758 SHA-1: 42c2bc019ed2cd20c69cd8abc753a1065829b5bd SHA-256: 150cf515acb343ec93f17a911454a83cb5bc7d9e8592000a4db74ed4fe22338e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, with one critical heuristic identifying it as a malicious redirector. The embedded URL 'https://ttraff.ru/pify?keyword=episode+guide+blacklist+season+3' is likely intended to lead the user to malicious content. While no scripts were explicitly extracted, the PDF structure and link farm suggest an attempt to distribute further malicious content or phish for information.

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/pify?keyword=episode+guide+blacklist+season+3
    • http://vofojejam.devinjamesbaldwin.com/uploads/1/3/1/4/131437736/6b2758c.pdf
    • http://files.mechelsehattrick.be/uploads/1/3/0/9/130969965/bodovano_ranudazagiveda_ritox_vokukakolurog.pdf
    • http://files.trezevantchurchofchrist.org/uploads/1/3/1/6/131637178/vuwunenoxugemogekona.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0435/8746/9469/files/anamnesis_example.pdf
    • https://cdn.shopify.com/s/files/1/0432/6889/8966/files/wusomibofomoxog.pdf
    • https://cdn.shopify.com/s/files/1/0429/0173/3542/files/clicker_heroes_code.pdf
    • https://cdn.shopify.com/s/files/1/0435/2117/9802/files/rezididanujobajumova.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gokibaleginasesomedusuj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98559129476.pdf
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/adobe_illustrator_cs3_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0440/3416/2853/files/47298639355.pdf
    • https://cdn.shopify.com/s/files/1/0432/5759/4016/files/vavevibulixuvazalufuf.pdf
    • https://cdn.shopify.com/s/files/1/0432/8872/3616/files/66099064797.pdf
    • https://cdn.shopify.com/s/files/1/0432/8760/9497/files/java_ee_6_tutorial_examples.pdf
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/6822938887.pdf
    • https://cdn.shopify.com/s/files/1/0428/0867/2423/files/fixode.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/26786996797.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c7a3.bin
ad509e64de39008a513b0b1ef5d2bc9739523be6b85109add86882dca259904d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC7A3 5352 bytes
font_01_sfnt_off0000d9e6.bin
0c5e252020477eb8e00e2b54022d1d2520adecf743f79d3a47cfb3d1107d4d20		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD9E6 11204 bytes
font_02_sfnt_off0000ff11.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF11 4324 bytes

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