Malicious PDF — malware analysis report

Static analysis result for SHA-256 06f2487e34a6d661…

MALICIOUS

PDF

42.0 KB Created: 2020-08-18 19:32:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06f8cf5b5e8a9bab6820cb2fc7af5f2b SHA-1: 7759f7c2126cfcd2075682c09812aea172e52fb1 SHA-256: 06f2487e34a6d6612f0063f5e972aa24e317088c6d623d8d67dea8734fe4f57f
154 Risk Score

Malware Insights

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

The PDF document contains a link to a known malicious redirector, ttraff.ru, disguised as a link to agility ladder drills. This indicates a phishing or scam attempt. The document also hosts a large number of external PDF links, suggesting it is part of a link farm designed to manipulate search engine results or distribute malicious content. No scripts were extracted, but the presence of embedded URLs and the heuristic firings strongly suggest a malicious intent to redirect the user to harmful content.

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=agility+ladder+drills+pdf
    • http://kibin.michaelgierl.com/uploads/1/3/1/3/131383483/485345.pdf
    • http://files.theartsinguthrie.org/uploads/1/3/1/8/131857758/cee778aa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/8451/3440/files/wufezubedegabij.pdf
    • https://cdn.shopify.com/s/files/1/0443/8881/0918/files/kill_bill_soundtrack_2.pdf
    • https://cdn.shopify.com/s/files/1/0429/5471/9395/files/kitoborujosenijizapuv.pdf
    • https://cdn.shopify.com/s/files/1/0460/1407/0945/files/brand_fusion_ringtone.pdf
    • https://cdn.shopify.com/s/files/1/0431/0374/8263/files/denoravabobivu.pdf
    • https://cdn.shopify.com/s/files/1/0440/6208/1174/files/bokoko.pdf
    • https://cdn.shopify.com/s/files/1/0428/4828/8934/files/96518997988.pdf
    • https://cdn.shopify.com/s/files/1/0428/7869/7631/files/manirifedosetafiziteruwex.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29318048561.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/67257536452.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_off0000678d.bin
1cd980e714c6864306c275a556433903924904fd55a00471f8cbb70adeacb198
pdf-font-stream PDF embedded font (sfnt) at offset 0x678D 5300 bytes
font_01_sfnt_off000079a4.bin
aefb51a33721ae4eed0de81598c0be99f6063b423680dc855f5f0ec5ef71175b
pdf-font-stream PDF embedded font (sfnt) at offset 0x79A4 9940 bytes