Malicious PDF — malware analysis report

Static analysis result for SHA-256 6baf8551b2a999b7…

MALICIOUS

PDF

52.8 KB Created: 2020-08-12 09:16:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2806c62b3f5c5e358f433f5088eab5a5 SHA-1: 8f9ea25a585256db322b30520af19c4b1a1660f8 SHA-256: 6baf8551b2a999b7af76479f509a0a33c54525cde3973119886515fcfb14511f
194 Risk Score

Malware Insights

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

The sample is a PDF document that contains a large number of embedded links, many of which point to a redirector service. The primary redirector URL is https://ttraff.cc/wb?keyword=translation%20techniques%20and%20strategies%20pdf, which is flagged as malicious. This indicates a likely phishing or malware distribution campaign using a link farm strategy to obscure the final destination. The ML classifier also strongly indicated maliciousness.

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/wb?keyword=translation%20techniques%20and%20strategies%20pdf In PDF document text
    • http://files.educationmosaic.com/uploads/1/3/1/6/131636678/6979851.pdfIn PDF document text
    • http://zixodifi.magrathconsulting.com/uploads/1/3/0/7/130776330/debotetamof-diwevolituronok.pdfIn PDF document text
    • http://files.iconnectup.net/uploads/1/3/1/6/131637362/6670125.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7285/5967/files/12399197256.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pifafesilepobusofamut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2656/9633/files/rafadod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8876/4316/files/css_z_index.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7714/7547/files/rivomisupanowapikoxij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8651/9195/files/vuxopumugilipidilup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4047/2229/files/vatogutisoxigo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/depusulolunifanilux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1540/4702/files/graphic_designer_portfolio_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5427/5479/files/bukhari_bangla.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6710/5687/files/zesuxepuju.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008368.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8368 5376 bytes
SHA-256: e1d21bdddee5efe601a495e11986d66c8a2df4da8b4f56d65fff0016c7e77af9
font_01_sfnt_off00009597.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9597 10076 bytes
SHA-256: a53a67e59e967dbcb8360a7ef5168837deb62aff597db082e138a8cade210046
font_02_sfnt_off0000b818.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB818 4324 bytes
SHA-256: 8405bb6ca9a6fb718a2e910e1cdde4d74ac2122cab0061dc5f772322db9c7ccd

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