Malicious PDF — malware analysis report

Static analysis result for SHA-256 52f94ce42a628da7…

MALICIOUS

PDF

43.2 KB Created: 2020-08-21 08:20:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 16a345ba029a974fb8529efea7a44896 SHA-1: deb4d8cef5065b9d30b03e97da63441744445dfb SHA-256: 52f94ce42a628da76e267d97f4834c5b5d34a25ac97f0f8b044175513f5baeed
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is a known malicious infrastructure. Additionally, it features a PDF link farm with numerous external links, many hosted on Shopify, suggesting an attempt to manipulate SEO or distribute further malicious content. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of the malicious redirector and the link farm strongly suggests a phishing or content distribution attack.

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.com/pify?keyword=lightroom+cc+vs+lightroom+classic+performance In PDF document text
    • http://files.morgankendallart.com/uploads/1/3/0/9/130969151/vaxubu.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/1/0436/2344/8736/files/9952318867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3137/9618/files/reading_comprehension_grade_4_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2269/6096/files/gatemiporopavuforutulevik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6997/2392/files/towuwavezimekededeju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6018/9594/files/interview_questions_on_data_structures_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0763/0747/files/19984052184.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6720/9893/files/saying_numbers_in_english_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1645/3272/files/71992602217.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2169/6149/files/minecraft_pe_cities.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8846/0441/files/wisewobes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1157/0838/files/force_and_destiny_beta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7727/0692/files/civil_engineering_drawing_download.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 2

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_off0000665a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x665A 5428 bytes
SHA-256: 37160813a0ae3c98dd367621da4d5c8ad9d554c5e07a7c2435f0104e56030f97
font_01_sfnt_off000078c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78C2 11876 bytes
SHA-256: d9a67dfe12e8db243b4222571d8becf69209d4c9a42e26034d5a6265dba42503

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