Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcdd7466c91e9231…

MALICIOUS

PDF

71.6 KB Created: 2020-08-18 14:53:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fa3f1463a78f33a57497b676f0642903 SHA-1: 1ec60ab4b6cfa68fe6663f496f6db37f91f34f22 SHA-256: bcdd7466c91e92315c54cd584c498bc6f59318ae1ab6d4e8badce972cbd6ec30
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector at 'https://ttraff.ru/pify?keyword=10000+opposite+words+in+english+pdf'. This indicates a phishing or social engineering attempt to direct users to malicious content. The document body itself is heavily obfuscated and contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create malicious PDFs.

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.ru/pify?keyword=10000+opposite+words+in+english+pdf In PDF document text
    • http://files.literacywagoll.com/uploads/1/3/0/7/130739015/246892288.pdfIn PDF document text
    • http://gezuga.viciousthunder.com/uploads/1/3/0/7/130738909/7583819.pdfIn PDF document text
    • http://woxujoz.colleen-pearson.com/uploads/1/3/0/8/130813841/novuxiwa-gikapijivebaw.pdfIn PDF document text
    • http://vobiv.raveninspection.com/uploads/1/3/0/8/130873826/fivini.pdfIn PDF document text
    • http://fefemiduf.greatgrace4u.com/uploads/1/3/0/8/130874038/mijut.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/6284/7640/files/57486629151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6670/1477/files/40044447128.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8259/6008/files/sosefaxix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/9014/4421/files/annamayya_songs_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4460/9943/files/topimopigoxozujokip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0101/1614/files/bidetenegaxexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4940/2016/files/freeview_choice_tv_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9124/5733/files/sugixavagoviveboxilotofoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4686/0957/files/download_tutorial_after_effect_bahasa_indonesia.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

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dcdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCDC 5284 bytes
SHA-256: 68690649245a85c0ef76a820e6c3ed80798f69a3c6b19f0d0daaaf611ce5fc02
font_01_sfnt_off0000eedf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEDF 10288 bytes
SHA-256: 41f6e3ae41708072109a50d49648950abfe1176dae31ea2b0c72a9edfd7f3d67

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