Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5200e1167caeeba…

MALICIOUS

PDF

42.1 KB Created: 2020-08-08 10:55:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8b029560c9f5179120f2c41b59af0798 SHA-1: a0234a36b973d3cd41a08ab0701917f59b32e545 SHA-256: c5200e1167caeeba4068b94279560b3ef0035ec372f0bdbf11efbd517b9b87f0
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK indicating a link to known malicious redirector infrastructure. Another critical heuristic, PDF_SEO_LINK_FARM, suggests the document is part of a link farm designed to manipulate search results. The primary malicious URL identified is https://ttraff.ru/pify?keyword=auditoria+financiera+concepto+pdf. No scripts were extracted from this sample.

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=auditoria+financiera+concepto+pdf In PDF document text
    • http://files.northbridgehistoricalsociety.com/uploads/1/3/1/3/131384721/ragosozazivavexurize.pdfIn PDF document text
    • http://files.mythodicals.com/uploads/1/3/1/3/131381553/88c5081ee7.pdfIn PDF document text
    • http://files.localbusinesscharityawards.co.uk/uploads/1/3/0/7/130775085/liretozabube-libefib.pdfIn PDF document text
    • http://files.imanshaggag.com/uploads/1/3/1/4/131438392/b6bf2fe37df04.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/1/0429/6871/1321/files/4548983719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3636/0351/files/picsart_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/todexarim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7142/9015/files/accountancy_book_class_12_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2506/2298/files/74706646957.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1395/6006/files/ruworutuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9242/6405/files/january_2020_calendar_with_holidays.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0935/9520/files/76821146451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6028/0982/files/open_e_tuning_scales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3458/1911/files/ebay_discussion_boards.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/tuledi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3942/4669/files/16481349041.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5031/9528/files/65431072319.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 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_off000066bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66BC 4928 bytes
SHA-256: f6cd6c6661b1c40e406cb70069984846abe36e92d1892b6ce7daba5b24b8919d
font_01_sfnt_off00007795.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7795 10508 bytes
SHA-256: d064a7539f725d9343006c6ded1f450adab021aac67ccf3320586bcba49c1f51

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