Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b0c52df3e3faf37…

MALICIOUS

PDF

35.3 KB Created: 2020-08-03 13:41:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c47e728775545e7c73c88456283e5b32 SHA-1: a553b0c811c5f15c1d682533bcb87f722924c6d4 SHA-256: 6b0c52df3e3faf376ed16554db3a577893dd26e1e5817d4f61fe3c7370e6dbd5
194 Risk Score

Malware Insights

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

This PDF file contains numerous links designed to appear as legitimate documents but redirect to a malicious URL, specifically 'https://ttraff.ru/pify?keyword=exercises+present+perfect+affirmative+negative+interrogative+pdf'. The ML classifier strongly indicated maliciousness, and the heuristic firings confirm the presence of a link farm and a malicious redirector. The document body, though containing garbled text, also includes the malicious URL, suggesting a phishing or scam attempt.

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=exercises+present+perfect+affirmative+negative+interrogative+pdf In PDF document text
    • http://files.southlandfamilyclub.com/uploads/1/3/1/3/131379371/e862cb.pdfIn PDF document text
    • http://files.325986690869568534.com/uploads/1/3/1/3/131380158/gadivujifemavoz.pdfIn PDF document text
    • http://files.joquinn.com.au/uploads/1/3/2/6/132681409/3960048d2abc04.pdfIn PDF document text
    • http://files.labyrinthsales.com/uploads/1/3/1/4/131412558/4933783.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/1/0429/7038/2490/files/74295767783.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/9948/3301/files/years_in_dog_years.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1075/2663/files/nerawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0118/3397/files/43787254701.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9672/7957/files/joxatow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8996/1884/files/dojazelazexuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9452/3552/files/sublime_text_3_license_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9323/7665/files/95965787908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2270/5063/files/60926896945.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9973/2633/files/6927387391.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0522/2818/files/pivinopazolamut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6275/4461/files/sevoflurane_anesthesia.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_off00004af1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AF1 5528 bytes
SHA-256: b70e1c70f012fc8ab11b9410ce2eb798e5f0515dad5af4842d76f8934b865400
font_01_sfnt_off00005db9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB9 9940 bytes
SHA-256: 7e37ecde4b8a5108281999348b2694106b98e65ce4e37128cf742d8b453021bd

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