Malicious PDF — malware analysis report

Static analysis result for SHA-256 10bde4257feea9ce…

MALICIOUS

PDF

41.9 KB Created: 2020-08-19 03:04:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 14fc4f842c3225c8738e7d33db242cde SHA-1: 3cd37224f768a8d9bf4246f39aa072164d4f113b SHA-256: 10bde4257feea9ce47d13ada20d671fd1e6070c9997f7681be76622a49362075
162 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to what appears to be a link farm or redirector infrastructure, specifically 'ttraff.ru'. The ML classifier strongly indicated maliciousness. While no scripts were directly extracted, the presence of a malicious redirector URL suggests the document is designed to lead the user to a malicious site, likely for further exploitation or phishing.

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/pify?keyword=hexagon+box+template
    • http://files.wreckingmachine.net/uploads/1/3/0/7/130775838/c4768a.pdf
    • http://fomefobo.buttermilkbrook.com/uploads/1/3/1/3/131398140/2948007.pdf
    • http://files.chantwong.com/uploads/1/3/0/7/130738620/4972785.pdf
    • http://files.myentouragemusic.com/uploads/1/3/1/6/131606201/795727b579.pdf
    • http://files.ldfes.com/uploads/1/3/2/6/132683088/koxepef_dalixugo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/6694/9786/files/search_engine_optimization_seo_starter_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69696378660.pdf
    • https://cdn.shopify.com/s/files/1/0438/4676/2656/files/86874497256.pdf
    • https://cdn.shopify.com/s/files/1/0429/8289/9871/files/malwarebytes_activation_code.pdf
    • https://cdn.shopify.com/s/files/1/0431/0577/9878/files/bobcat_s300_parts_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/1189/9545/files/xasefusavegupip.pdf
    • https://cdn.shopify.com/s/files/1/0431/4752/6305/files/85246283029.pdf
    • https://cdn.shopify.com/s/files/1/0432/3613/0983/files/86534585733.pdf
    • https://cdn.shopify.com/s/files/1/0438/0462/3010/files/31788325959.pdf
    • https://cdn.shopify.com/s/files/1/0430/2848/0157/files/bapijarazan.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_off000067af.bin
f71cdbbb3947cbb32909981b16de2ea29a14cc69300133ce2fa41cb740a28b20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67AF 5032 bytes
font_01_sfnt_off000078c4.bin
03f94c60849116a15427bfd49f01aceec4e65117686d306c4b4457d5477536f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78C4 10080 bytes

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