Malicious PDF — malware analysis report

Static analysis result for SHA-256 55050093003f5448…

MALICIOUS

PDF

44.4 KB Created: 2020-08-18 19:45:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cd08471c527b0c62eca31d248275db79 SHA-1: 52545d4e64776638d64bd5b1ddf40defff98d666 SHA-256: 55050093003f5448031ab4c8781103b930c5936d0459250e753002fc2c27d238
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector at https://ttraff.com/pify?keyword=twitter+video+format+specs. The document body, though heavily obfuscated, contains this URL and appears to be a lure related to "Twitter video format specs". The ML classifier strongly supports the malicious nature of this PDF, indicating it's designed to redirect users to harmful content.

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=twitter+video+format+specs In PDF document text
    • http://files.scdtheatre.org/uploads/1/3/0/7/130738641/wafijemogebijozixe.pdfIn PDF document text
    • http://files.aspontaneoustraveler.com/uploads/1/3/0/8/130874655/1005292.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/1/0434/3198/5309/files/jubilate_deo_cantate_domino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8561/7570/files/86200975461.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0084/5720/files/42113502941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4667/4336/files/60107980938.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3248/5793/files/96340999249.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0268/2789/files/13252861124.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3171/4199/files/gekoximaburotipobotirawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1243/1776/files/puzuwagarekewogipabowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6127/1959/files/azulfin_500mg_bula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4759/8742/files/40089827757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0835/0615/files/21121168239.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
🗂 Part of campaign: aspontaneoustraveler.com 3 samples

Related samples 4

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_off00006f61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F61 5372 bytes
SHA-256: a2d38593c00cd11ea1872985eccbd27a82e344d84a46dd78b5177adf3b63f259
font_01_sfnt_off000081a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81A3 10336 bytes
SHA-256: 60e7af11bbf4c8626c3ab6dee07ca8be85f20d52a5960e6bc6cbaa139b0c6186

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