Malicious PDF — malware analysis report

Static analysis result for SHA-256 50a8cb2c57fbdcc2…

MALICIOUS

PDF

40.1 KB Created: 2020-08-20 01:25:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4de8b616b0b70f8d3791e82fe6afe814 SHA-1: d9b0eb361aa7f3bf84b1035c3021a7dfaa52e994 SHA-256: 50a8cb2c57fbdcc2dd08eedf1fe188daeb7998eda044634b611eed73462b71a6
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which are hosted on Shopify domains but point to potentially malicious redirectors. The primary malicious URL, 'https://ttraff.ru/pify?keyword=office+depot+address+label+template', is identified as a known malicious redirector. This suggests the document is designed to funnel users through a series of links, likely for SEO poisoning or to deliver a secondary payload.

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=office+depot+address+label+template In PDF document text
    • http://files.militiabymichaelhill.com/uploads/1/3/1/4/131406663/424916.pdfIn PDF document text
    • http://files.ramblesandbrambles.co.uk/uploads/1/3/0/7/130775249/661bd.pdfIn PDF document text
    • http://lebus.nerdnotesguides.com/uploads/1/3/1/6/131637014/manol.pdfIn PDF document text
    • http://files.treevalleyfencing.co.uk/uploads/1/3/0/7/130776246/9265773.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/1/0434/0023/3112/files/arrested_caries.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pezudatilekubad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0147/1388/files/lenelapotenujejuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/73034377984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1990/9794/files/77483041457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0463/2992/files/macroeconomics_charles_jones_3rd_edition_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5560/4121/files/amcat_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/9340/5339/files/data_analysis_with_microsoft_excel_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2181/1364/files/79213653981.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0843/4081/files/14729875592.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_off00005f57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F57 5468 bytes
SHA-256: 72535925500c4610089faec8e8b88af052d239c31200e4b37009fa7f4e9b4fc6
font_01_sfnt_off000071c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71C8 9860 bytes
SHA-256: 6c31f2f88b9ed6e3ac85566a3b175ef416f106d84262d9c11b3f1219e6952d2a

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