Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bfa66ad4d4a4511…

MALICIOUS

PDF

73.7 KB Created: 2020-07-13 07:37:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 95a653d5eaf9f789ac34c6c1834cf8a6 SHA-1: 774d84a016496fee120d1a8c8086a464c4df43a6 SHA-256: 0bfa66ad4d4a4511dc930e8fc4f742232917514717dec05e6d22ff00b03faab0
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are identified as part of a link farm and redirector infrastructure. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' indicate that these links are intended to lead users to malicious content. The ML classifier also strongly flagged this PDF as malicious, supporting the conclusion that it is designed for malicious redirection.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.cc/pify?keyword=types+of+lines+in+engineering+drawing In PDF document text
    • http://files.eguastella.com/uploads/1/3/1/8/131871690/4656610.pdfIn PDF document text
    • http://files.nanaimotreeservices.com/uploads/1/3/1/1/131164324/pazas.pdfIn PDF document text
    • http://files.metacitrography.com/uploads/1/3/1/4/131407086/sitokif.pdfIn PDF document text
    • http://files.bassriverchiropractic.com/uploads/1/3/0/7/130738892/gepigisavawam-mugafeli.pdfIn PDF document text
    • http://files.imarsonline.com/uploads/1/3/1/3/131380413/6c76ebc2.pdfIn PDF document text
    • http://files.ashleyparsonsyoga.com/uploads/1/3/2/7/132740415/newixebomufobezofawe.pdfIn PDF document text
    • http://files.coastnuflow.com.au/uploads/1/3/1/3/131379118/nerinup.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://loxuvez.files.wordpress.com/2020/07/8723404676.pdfIn PDF document text
    • https://nimodinuti111298458.files.wordpress.com/2020/07/rajixakurusivalulonib.pdfIn PDF document text
    • https://raxupevifaj316168670.files.wordpress.com/2020/06/82544410002.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3504/0664/files/fikufefexonakedusoxosabor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0015/1707/files/19270894795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8462/7616/files/nuromitipumemazemozazav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0223/2983/files/26555468944.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4684/6107/files/jezuwogaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9496/6436/files/dogofezosoxosafak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0333/0209/files/44758737350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90685913575.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cfc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFC7 5060 bytes
SHA-256: bdcc52a0fb48e45fdb5937c01b2d03cde0fe635224aa4993b1dacd253a0c2c3b
font_01_sfnt_off0000e11d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE11D 9964 bytes
SHA-256: cef67084c2c54b2398aec0f9d44b77b4dd31f56dc1214e45ca543cb37527d4df
font_02_sfnt_off00010383.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10383 16172 bytes
SHA-256: 940e4c455b8314af7e7714c1735a8bf1dd72b3c286ac514ccc3d469e65a90f70