Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0893c605747a1f6…

MALICIOUS

PDF

49.6 KB Created: 2020-08-20 18:06:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 177712dad4930bea8338851e3c092a87 SHA-1: 99f46d4d3837b0eb2be2325e815ca89dac200477 SHA-256: b0893c605747a1f6e1135341f0666efbb8465fe4ff2704e68cad52daee192b5b
194 Risk Score

Malware Insights

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

The PDF document was identified as malicious by a machine learning classifier and contains a significant number of embedded links. One of these links, https://ttraff.ru/pify?keyword=cancioneros+catolicos+con+acordes+para+guitarra+pdf, points to known malicious redirector infrastructure. The document also functions as a link farm, embedding numerous other PDF links, many hosted on cdn.shopify.com, likely for SEO manipulation or to distribute further malicious 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.ru/pify?keyword=cancioneros+catolicos+con+acordes+para+guitarra+pdf In PDF document text
    • http://files.theemptybobbin.com.au/uploads/1/3/0/7/130739101/3904560.pdfIn PDF document text
    • http://files.novelsf.com/uploads/1/3/1/4/131483550/mataxopawowojuvuba.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/1/0447/9765/7248/files/tracheostoma_pflege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5090/1402/files/belaluwix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5129/4628/files/tecnologias_de_la_informacion_ejemplos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0934/2621/files/25126736815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/4746/8446/files/corrugated_roof_sheeting_sizes_south_africa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9067/3813/files/53888018671.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2789/8268/files/10288954007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/xikimowis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7273/1801/files/cursive_writing_capital_letters_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8155/6375/files/9188101279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/52135332303.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_off000078b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78B2 5228 bytes
SHA-256: 948bada9fc5e6d0627f04190d7ecb9b02fe5cae59473aeedbc6e36c03c0ee946
font_01_sfnt_off00008a83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A83 14976 bytes
SHA-256: 33ddab0212585d6da3733b670e479105b89b3f1fb6a0bf2ece8139c773d20aca

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