Malicious PDF — malware analysis report

Static analysis result for SHA-256 27871002d14727c2…

MALICIOUS

PDF

39.4 KB Created: 2020-08-06 18:31:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8625f5f99effea0efc818ae0f8a0e989 SHA-1: 0385000f79c509c90caabc3cfb0d4831d3cc9df7 SHA-256: 27871002d14727c2840b84eafd4c0f67b22b92e26dafc0fa0f6eb22411e5be0b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, many of which point to external sites, indicating a link farm. One critical heuristic identified a PDF redirector link to 'ttraff.ru', which is known malicious infrastructure. The document body, though heavily obfuscated, contains text related to 'pdf splitter merger download' and the malicious URL, suggesting a social engineering lure to trick users into downloading further malware. No scripts were extracted from this sample.

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=pdf+splitter+merger+download In PDF document text
    • http://files.chuckallenloans.net/uploads/1/3/0/7/130739533/sinafurupaxufatifez.pdfIn PDF document text
    • http://files.furiouscrafting.com/uploads/1/3/0/7/130776054/4311340002d4f.pdfIn PDF document text
    • http://files.hfnyourvoice.uk/uploads/1/3/1/4/131482864/4828027.pdfIn PDF document text
    • http://files.justkiddingtheatrecompanyinc.org/uploads/1/3/2/6/132681325/dotilezefezij-kudinijorap.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/1/0427/6482/8839/files/xemafonumo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8184/3356/files/96160070524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1548/8163/files/nagamagezalaxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9411/3446/files/76180191336.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0134/8255/files/jidusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3482/1287/files/45307218993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4443/7144/files/60981113128.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5281/0911/files/bizodifaloxakakiwexadodin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4127/5547/files/critical_accounting_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7315/8806/files/adenoma_de_hipofisis_sintomas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3729/3724/files/fenewafurol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8151/5673/files/ropelobaforozifivopalo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2692/2146/files/16803220748.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_off00005b8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B8A 5456 bytes
SHA-256: 69d84291025d2d60bb35810eb053acd20f3ffdbaf432ee116c198e9565bdcb1b
font_01_sfnt_off00006e13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E13 10136 bytes
SHA-256: 5526931c5c1b6399c34cba563152fc4ed72df6d4f5eeb859c5e1a077d21db95b

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