Malicious PDF — malware analysis report

Static analysis result for SHA-256 199e6948f05b2072…

MALICIOUS

PDF

45.8 KB Created: 2020-08-12 09:41:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2f45b2068a9e71e94c9557f1aa96beb2 SHA-1: f8ec458b1f35fabb512519f232b9049d4ff3fcc8 SHA-256: 199e6948f05b207271ed621c956f53bb9fa98845d9b166fa75ea138ba3fa5525
162 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. Crucially, it also contains a link to a known malicious redirector, ttraff.ru, which is likely the primary malicious payload delivery mechanism. The presence of a 'download button' lure further supports a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wb?keyword=haryana%20gk%20capsule%20pdf
    • http://files.sofiagomezuribe.com/uploads/1/3/1/4/131453267/voselusujoxefate.pdf
    • http://files.lsassetti.com/uploads/1/3/1/4/131483337/dogatovisopemar_xiwilalijijan.pdf
    • http://files.ic-rossmoor.org/uploads/1/3/1/6/131606046/fdbfedc160917.pdf
    • http://files.manitobaarteducation.com/uploads/1/3/2/6/132681144/dixomo-magab.pdf
    • http://vegirobe.lucindaroweart.com/uploads/1/3/2/6/132695384/fabavubugosaboseduve.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/5726/4280/files/fezidajagatovowumif.pdf
    • https://cdn.shopify.com/s/files/1/0427/6187/9719/files/muxuver.pdf
    • https://cdn.shopify.com/s/files/1/0431/0905/6668/files/76858035911.pdf
    • https://cdn.shopify.com/s/files/1/0432/7456/7833/files/natenamegone.pdf
    • https://cdn.shopify.com/s/files/1/0429/5108/2143/files/viwigubotidarir.pdf
    • https://cdn.shopify.com/s/files/1/0428/2764/5084/files/9955738505.pdf
    • https://cdn.shopify.com/s/files/1/0438/9847/0552/files/bewafogu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7861/4168/files/22522655471.pdf
    • https://cdn.shopify.com/s/files/1/0437/1116/8664/files/add_text_to_adobe_form.pdf
    • https://cdn.shopify.com/s/files/1/0429/8876/5337/files/kenyan_passport_application_form_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/0908/9434/files/6596327807.pdf
    • https://cdn.shopify.com/s/files/1/0434/8208/7576/files/weburonoribexanenepejuvu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000748b.bin
b430d597d4573dbf59ebf32b3d7b91f8ebd2a1d2916d07f9e62707abfde366a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x748B 5448 bytes
font_01_sfnt_off0000872a.bin
1d3e368a70aa6476020519383161df21e658b1efe52f5e5e935614a1183e1ecb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x872A 10392 bytes

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