Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcd0565b12e6b7df…

MALICIOUS

PDF

38.9 KB Created: 2020-08-20 09:39:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5ae662693c757fe75a9d3cd5e4a1f21d SHA-1: 11eaf640e50f59cb36e0abfaffbbb5fd879dd34f SHA-256: dcd0565b12e6b7df68533bc884742520dc7aab8686602930065a7be84d8c7b14
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains multiple embedded links, with one specifically identified as a malicious redirector. The document body includes phrases like 'Mark sheet sample in word' and a call-to-action, suggesting a lure to trick the user into clicking the malicious link. The link `https://ttraff.com/pify?keyword=mark+sheet+sample+in+word` is a critical finding, indicating a redirection to potentially harmful content. The presence of a large number of external PDF links also suggests a link farm, a common tactic for SEO poisoning or distributing malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.com/pify?keyword=mark+sheet+sample+in+word In PDF document text
    • http://gotuzofo.hamptonsgarage.com.au/uploads/1/3/0/8/130874284/rajaxavamuwotalomime.pdfIn PDF document text
    • http://zejebaxi.bonkerforbyram.com/uploads/1/3/2/6/132682090/6514936.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/1/0429/3358/4028/files/volejibed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/7539/8821/files/vivud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2977/3982/files/kakeretigomilaje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5037/5070/files/juridifedutoxogomolipamaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4372/4186/files/jifivuvagegipaxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/1841/5254/files/xibuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3593/0273/files/asian_cup_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9861/0591/files/civ_6_japan_guide_rise_and_fall.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3219/0876/files/burebegofuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8115/4198/files/xowalozitanawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6001/0912/files/deminapubaf.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 1

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_off00005af6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AF6 5360 bytes
SHA-256: 23b5a386900674e60f4658642592629ac28d628a2b72c071d1ffa17259b780a2
font_01_sfnt_off00006d23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D23 9920 bytes
SHA-256: 8e644d88a9fbdf11f8336a15b86b5695e30b50d7842ba69c0dcaa79a6e190152

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