Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeba518f95f94f24…

MALICIOUS

PDF

33.5 KB Created: 2020-08-22 21:30:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0fe429c1f83cc1a63d55e66a4c1f25a0 SHA-1: 54771305b0c473ddf368fd3c6af655f44a17a0ff SHA-256: eeba518f95f94f245a965a76e5232f7cbd1e0603777460a7c77b7655ed8b0273
152 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one pointing to a known malicious redirector (ttraff.ru). The document body, though heavily obfuscated, appears to reference a 'Cincinnati weather report channel 12', suggesting a lure to disguise the malicious intent. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, further supporting the malicious redirection pattern. No scripts were extracted from this sample.

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=cincinnati+weather+report+channel+12
    • http://files.eyespeak.org/uploads/1/3/0/8/130813866/pugewafa.pdf
    • http://latepanog.fdfdoodles.com/uploads/1/3/2/3/132303195/milebosava_golajemu_xutogitikutede_werenulex.pdf
    • http://files.jackalopehq.com/uploads/1/3/1/4/131483019/5366815.pdf
    • https://cdn.shopify.com/s/files/1/0430/0649/2823/files/vazabamadib.pdf
    • https://cdn.shopify.com/s/files/1/0435/1308/6106/files/momojedeparajem.pdf
    • https://cdn.shopify.com/s/files/1/0433/2004/9822/files/70062585562.pdf
    • https://cdn.shopify.com/s/files/1/0435/3468/0216/files/radaxavorakit.pdf
    • https://cdn.shopify.com/s/files/1/0428/6195/3191/files/3059814220.pdf
    • https://cdn.shopify.com/s/files/1/0452/0201/4357/files/ridiculous_6_full_movie_english.pdf
    • https://cdn.shopify.com/s/files/1/0430/4578/1665/files/jeziga.pdf
    • https://cdn.shopify.com/s/files/1/0427/5719/3895/files/2259990851.pdf
    • https://cdn.shopify.com/s/files/1/0427/4873/9740/files/first_world_war_history_in_bangla.pdf
    • https://cdn.shopify.com/s/files/1/0431/4542/9160/files/zipipamodewejusel.pdf
    • https://cdn.shopify.com/s/files/1/0429/8915/8554/files/61902759798.pdf
    • https://cdn.shopify.com/s/files/1/0433/4478/9653/files/22569159105.pdf
    • https://cdn.shopify.com/s/files/1/0432/4796/0232/files/bankart_repair_protocol.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004700.bin
9ca1f14e35c1f3f798666eaeef0f47da62cb94c725a7f1bc3ffa8de6701613e8
pdf-font-stream PDF embedded font (sfnt) at offset 0x4700 5024 bytes
font_01_sfnt_off0000581c.bin
1a17cffd157558163271ad714a41dddeff62de866cdb4ef2eac8943592cb4bf9
pdf-font-stream PDF embedded font (sfnt) at offset 0x581C 9668 bytes