Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a1ea198da091a8f…

MALICIOUS

PDF

42.0 KB Created: 2020-08-12 06:17:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 146b197edad95c0e308f92ff3e869544 SHA-1: 2770dc2d4182a8f07fd02aaeca58063206d53625 SHA-256: 9a1ea198da091a8fdceddeb3d222973b32ab4a277f96ad32acc700513b150a75
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=alkalize+or+die+book+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to Shopify-hosted PDFs. The ML classifier strongly indicated maliciousness. The document body, though heavily obfuscated, contains the same malicious URL and references to Shopify PDFs, reinforcing the redirection 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.ru/pify?keyword=alkalize+or+die+book+pdf
    • http://files.cffu.org/uploads/1/3/2/6/132683111/bazakekukaxatiwi.pdf
    • http://files.prompt.ca/uploads/1/3/1/4/131453456/muluvu-fumodimaleviga-jipukazoragexo-vezuvuv.pdf
    • http://files.accesscurriculum.com/uploads/1/3/2/8/132815220/fda1ddef.pdf
    • http://files.arkansascloggingcouncil.com/uploads/1/3/1/4/131412032/2bede96.pdf
    • http://files.raiseagent.com/uploads/1/3/1/0/131070459/fezatudawinuf.pdf
    • https://cdn.shopify.com/s/files/1/0430/3699/9842/files/65095410380.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bewasovenajuwawofitef.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/benubojebexoreloruva.pdf
    • https://cdn.shopify.com/s/files/1/0428/2338/5247/files/40655105577.pdf
    • https://cdn.shopify.com/s/files/1/0440/3986/4485/files/24179602936.pdf
    • https://cdn.shopify.com/s/files/1/0429/4115/3439/files/dokazidekupajuveg.pdf
    • https://cdn.shopify.com/s/files/1/0435/2986/3320/files/58184317818.pdf
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/megipigosobaxirerefisebob.pdf
    • https://cdn.shopify.com/s/files/1/0440/8619/8424/files/xegema.pdf
    • https://cdn.shopify.com/s/files/1/0433/6379/5096/files/70748938467.pdf
    • https://cdn.shopify.com/s/files/1/0429/4361/1036/files/59535260684.pdf
    • https://cdn.shopify.com/s/files/1/0428/1732/3175/files/65021178052.pdf
    • https://cdn.shopify.com/s/files/1/0428/2348/3548/files/tila_tequila_instagram.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_off000065a8.bin
a1249411b5bebbc86f002763aa311ff60e2378acfc21d0cb32772c825a072622		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65A8 5100 bytes
font_01_sfnt_off00007714.bin
b010e6ba6d9ca43897660d75ab04b8e58c5f752546cc7b75db4041e36aa768c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7714 10488 bytes

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