Malicious PDF — malware analysis report

Static analysis result for SHA-256 50df14f8783b91b5…

MALICIOUS

PDF

42.3 KB Created: 2020-08-23 01:28:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5137c60b3d3354cc69ea60aab74a87b4 SHA-1: a5fbfd62290bef268a45145c06a589ea5274665d SHA-256: 50df14f8783b91b5487d8fbb55d23bd4e1bb6ae68fa279764260d77b1e2d82ea
194 Risk Score

Malware Insights

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

The PDF file contains numerous links, with one specifically pointing to a redirector URL known for malicious activity. The document body, though partially corrupted, contains text related to a game and the redirector URL, suggesting a lure to download potentially malicious content. The presence of a link farm further indicates an attempt to distribute malicious files or redirect users to harmful sites.

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.cc/pify?keyword=brother+in+arms+apk+game In PDF document text
    • http://files.matthewlundyportfolio.com/uploads/1/3/0/8/130813054/39765ef036fa0b7.pdfIn PDF document text
    • http://dilika.walkbostonhistory.com/uploads/1/3/2/7/132740649/kavatupamikijez.pdfIn PDF document text
    • http://sakofog.tigrecolorado.com/uploads/1/3/2/8/132814930/3420182.pdfIn PDF document text
    • http://files.onsceness.com/uploads/1/3/1/3/131384401/7103876.pdfIn PDF document text
    • http://files.seas-marketing.com/uploads/1/3/0/8/130813846/2100622.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/1/0430/4856/6933/files/13239174241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6559/6321/files/worudimavamod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3031/4133/files/robogew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6173/0718/files/sedapixovopis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9508/9559/files/andhra_bank_home_loan_application_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/8885/5459/files/mubemepetitemininub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8191/4781/files/electrolysis_equations_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9252/4702/files/feselexigenanaxinowebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gevuruliwineda.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 5

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_off00006898.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6898 5316 bytes
SHA-256: fd9e1848f553ae6e937c086eaaa635c2ad200efd69d1f77dede58c1ded6dd957
font_01_sfnt_off00007a7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A7D 10000 bytes
SHA-256: 07947b2d4ce4245a3f81d6b3cabc8b466193c77a4641990b5b795dd256e817f5

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