Malicious PDF — malware analysis report

Static analysis result for SHA-256 db586790ceb179b6…

MALICIOUS

PDF

40.5 KB Created: 2020-08-01 16:45:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e6438b2fbb95d7cd2676e11d7495fb6c SHA-1: ec27d6ac65a36abbb45f33733796adc5e6de4952 SHA-256: db586790ceb179b64d79a416adfaba6856d38bead77f9a56b835354461956730
154 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. One of the primary links points to 'ttraff.com', a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=the+tempest+songs', indicating a potential lure or redirection mechanism. The presence of numerous shopify.com links, some flagged as benign and others unknown, alongside suspicious direct file links, suggests an attempt to blend malicious content with legitimate-looking resources.

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/pify?keyword=the+tempest+songs
    • http://files.nccrabbingandshrimping.com/uploads/1/3/0/7/130776008/4077c03bc876a.pdf
    • http://files.sfkart.com/uploads/1/3/2/6/132681823/natapodewejira_sodoravow.pdf
    • http://files.sameems.com/uploads/1/3/0/7/130775413/zujefozedavudunurik.pdf
    • https://cdn.shopify.com/s/files/1/0432/1778/0896/files/jakumogidisewixiwuxeboged.pdf
    • https://cdn.shopify.com/s/files/1/0431/7347/8560/files/69443823310.pdf
    • https://cdn.shopify.com/s/files/1/0434/3886/6584/files/31744108829.pdf
    • https://cdn.shopify.com/s/files/1/0430/3552/5282/files/19737126639.pdf
    • https://cdn.shopify.com/s/files/1/0434/4895/9142/files/vw_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/5533/4055/files/gabupefuruw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/10809735118.pdf
    • https://cdn.shopify.com/s/files/1/0432/2240/1185/files/fejugumedamado.pdf
    • https://cdn.shopify.com/s/files/1/0432/8570/8968/files/bunobotafe.pdf
    • https://cdn.shopify.com/s/files/1/0431/7272/4900/files/ninavaxejonu.pdf
    • https://cdn.shopify.com/s/files/1/0437/9482/5376/files/kejejaseka.pdf
    • https://cdn.shopify.com/s/files/1/0429/0304/4263/files/50814474833.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_off0000623e.bin
afc86fa4fdc9b141a7b771eae1d9cb1820f315a8b86e9a4ef5b58e2869ae59e4
pdf-font-stream PDF embedded font (sfnt) at offset 0x623E 4844 bytes
font_01_sfnt_off00007297.bin
b2d234ff0d4ade44e4c025b41dcb2abe9a2870c5639b717e8557a804f5c174a3
pdf-font-stream PDF embedded font (sfnt) at offset 0x7297 9848 bytes