Malicious PDF — malware analysis report

Static analysis result for SHA-256 b70684664c88e633…

MALICIOUS

PDF

40.2 KB Created: 2020-08-08 05:46:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 30ef0122362642d166bc4115d5d8499e SHA-1: 843fe0d87588ec845676ded217f9955e339ae1f3 SHA-256: b70684664c88e633b9dde813d902f7ed9415dc9ea8b1917e420c1c3fe9480899
194 Risk Score

Malware Insights

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

The PDF file contains numerous links, including one pointing to a known malicious redirector at 'ttraff.ru'. The document body, though partially corrupted, suggests a lure related to formal letter formatting. The presence of a link farm and the ML classifier's high confidence indicate malicious intent, likely to redirect users to a phishing or malware distribution site.

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=format+of+formal+letter+in+english+pdf In PDF document text
    • http://files.nationalnightouteasterndistrict.com/uploads/1/3/1/4/131437702/5118415.pdfIn PDF document text
    • http://files.jennifercolpittsphotography.com/uploads/1/3/1/6/131606798/zuzutetux.pdfIn PDF document text
    • http://files.rochonsandshall.com/uploads/1/3/1/4/131406735/kedibetewawevimesuke.pdfIn PDF document text
    • http://files.wisconsinlitmap.com/uploads/1/3/1/3/131381464/tidelijiposovu-jidotamuzifa-wufiwufon-zinifinamibu.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/1/0428/9835/8432/files/86372263330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3861/3399/files/bewitibubeterin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7583/6840/files/wobejelezedini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6200/9755/files/46420620761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6590/9160/files/29571652357.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7260/0726/files/rariwezuduva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6828/3294/files/90647915151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65105912314.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dojedeteremedadedarovir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5340/7646/files/nefifajaxej.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 8

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_off00005ee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE2 5412 bytes
SHA-256: 1c3db6f9da325975060200511e91f7a7d084922cdb9a4452c1eca0e0adde0f7d
font_01_sfnt_off0000711c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x711C 10180 bytes
SHA-256: 8865a502325c703b5a581bb06f5e73a2a02d299f55ed33269aa863549dbed934

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