Malicious PDF — malware analysis report

Static analysis result for SHA-256 06892172ca3aa613…

MALICIOUS

PDF

42.1 KB Created: 2020-08-18 14:38:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fca8628cb28cc071d72c8bee40354792 SHA-1: 69c6dd9c8d7ff0563969c7f2cd9d21a1974284da SHA-256: 06892172ca3aa613a344c094b5b83f25beedd08e38d354c6d561ba78db750692
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.ru) disguised as educational content. The ML classifier and heuristic firings strongly indicate malicious intent, likely to redirect users to a phishing or malware distribution site. No scripts were extracted, but the embedded links are the primary attack vector.

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=math+multiplication+worksheets+for+5th+graders In PDF document text
    • http://files.globalinguae.com/uploads/1/3/1/4/131412235/xalefog.pdfIn PDF document text
    • http://files.otlbuildingcompany.com/uploads/1/3/2/6/132695582/5933331.pdfIn PDF document text
    • http://goxelit.kitsapcounselingservices.com/uploads/1/3/0/7/130738850/kozeme.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/1/0437/6294/2101/files/annotate_apple_pen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6197/8023/files/putumaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3758/7606/files/kakinagasobuboxonagiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6454/0835/files/relamerebetezuken.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7539/3944/files/tales_of_mystery_and_imagination.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6199/1841/files/nipanesogebemopaxakuvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0046/2503/files/vuwudoxisefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5928/1048/files/susutolub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0600/8216/files/gawapogazisaxaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2026/3322/files/lesifugonotujerurupur.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 4

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_off00006574.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6574 5856 bytes
SHA-256: 5a5f69cca08bbaf1dbf4d3ed13cf3305aa543eb73ca538872092c83e7ccdf9e5
font_01_sfnt_off0000794a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x794A 10060 bytes
SHA-256: 33960adc29a89999c8173d17fc96e8cb039529a1432109c6d99b0a2878b06597

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