Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d5a5678f64df1b0…

MALICIOUS

PDF

39.6 KB Created: 2020-08-19 13:31:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 71e4d34b944e2fb74a6ad24c7066822b SHA-1: 1b00f76802f57793f6621bf0d2e716a72f6acd2d SHA-256: 6d5a5678f64df1b0412c0b3d8fa9599dbe7f5e67db65ed7b6806c424fc6bff6d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded links, many of which point to a redirector service (ttraff.cc) that is flagged as malicious. The document body, though partially obfuscated, includes the same lure text as the redirector URL, suggesting a coordinated phishing or malware distribution effort. 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/pify?keyword=addition+and+subtraction+worksheets+for+year+2 In PDF document text
    • http://files.luxuryjourneytravel.com/uploads/1/3/1/6/131606087/pigesopa.pdfIn PDF document text
    • http://files.danadanleyphotography.com/uploads/1/3/0/8/130814258/sazik_rukejuwumer.pdfIn PDF document text
    • http://files.handymanloganut.com/uploads/1/3/2/7/132712315/08f9e4b48fd1.pdfIn PDF document text
    • http://files.landsendguildofartists.co.uk/uploads/1/3/1/6/131606803/nirimakojunuk.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/1/0434/2359/6693/files/30786425645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/65315122667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0679/4656/files/75577557354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8425/1285/files/57450714720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1349/6222/files/vukugirefaguzixamel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2845/4304/files/purified_water_ip_monograph_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6394/3074/files/gixixuxepifepaxefu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4896/8090/files/zipujutimebumiduv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6784/2465/files/b1_english_grammar_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9659/5870/files/77644024350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5282/5767/files/robe_of_useful_items.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 6

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_off00005c75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C75 5596 bytes
SHA-256: ec65c05fdf05a618677440b16e5ec63aa15b3818da7e6981467b9008653e0bf6
font_01_sfnt_off00006f8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F8F 9948 bytes
SHA-256: e82f0015761cd219b0e0124e5954eab46449a9e4aa25bceda8b36e3d4e495f72

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