Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cbdbc1b1afa26a3…

MALICIOUS

PDF

47.2 KB Created: 2020-08-08 13:33:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6799489b1c417b953e8ef8c51647d355 SHA-1: 19df150e33bcbeed7ba055752104052ead747ef0 SHA-256: 0cbdbc1b1afa26a36e0883dd76fe5ec25c9731b3f6868b46bff9b26e3fb1874f
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including a primary redirector to 'ttraff.ru', suggesting a link farm or SEO poisoning attack. The document body, though partially corrupted, contains text related to 'Talent transformation and the triple bottom line pdf' and the malicious URL, indicating a lure to a potentially malicious site. The ML classifier strongly flagged this PDF as malicious.

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=talent+transformation+and+the+triple+bottom+line+pdf
    • http://files.janetdesautels.com/uploads/1/3/1/4/131453024/4967862.pdf
    • http://files.bordercollieevents.nl/uploads/1/3/0/8/130814120/d0ff6411.pdf
    • http://files.toddkongart.com/uploads/1/3/0/7/130775055/2102080.pdf
    • http://files.hillsideanimalhospital.net/uploads/1/3/2/6/132681891/3521474.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0428/7329/0908/files/34378330729.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78649322563.pdf
    • https://cdn.shopify.com/s/files/1/0437/8856/6677/files/38803890425.pdf
    • https://cdn.shopify.com/s/files/1/0432/2977/3981/files/8851948734.pdf
    • https://cdn.shopify.com/s/files/1/0434/0970/3061/files/76121245044.pdf
    • https://cdn.shopify.com/s/files/1/0430/3601/6803/files/80163498331.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/11783771814.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90840236881.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66916333827.pdf
    • https://cdn.shopify.com/s/files/1/0430/4361/8965/files/xanugobifaworopaju.pdf
    • https://cdn.shopify.com/s/files/1/0438/8120/1819/files/44711255062.pdf
    • https://cdn.shopify.com/s/files/1/0436/0224/7838/files/68429170300.pdf
    • https://cdn.shopify.com/s/files/1/0428/7958/2374/files/reactive_training_manual.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_off00006c6a.bin
f157da4e57ddcbe9cc4ea18131742b84e11acc90ff75f470117b898276a5d69b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C6A 5160 bytes
font_01_sfnt_off00007dba.bin
31ac3e1ada952d30ad57b74487bcab4124f48f1757a7fdc7f30e12283357c98b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DBA 10532 bytes
font_02_sfnt_off0000a17a.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA17A 4324 bytes

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