Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0da01150c1f22c2…

MALICIOUS

PDF

41.4 KB Created: 2020-08-18 18:01:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e6fab4ac44b7d8f3654824caec1153c4 SHA-1: 2abe5f163ba497531a7e98f7dae89f2773923369 SHA-256: a0da01150c1f22c232cfe4620c26a8206e15990e5eefb3df4facbef7a07ae3d9
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector URL, indicating a phishing or scam attempt. The embedded URL `https://ttraff.ru/pify?keyword=cartoon+hd+wallpaper++for+mobile` is a critical finding, suggesting the document's primary purpose is to redirect users to potentially harmful content. The ML classifier strongly supports the malicious nature of this PDF.

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=cartoon+hd+wallpaper++for+mobile In PDF document text
    • http://files.bokobowls.com/uploads/1/3/1/3/131398008/jigekit_gakubifef_mazetisudoxovep_gumopivojeri.pdfIn PDF document text
    • http://rowepebab.taylorlandscapeandgardens.com/uploads/1/3/0/7/130776483/4761204.pdfIn PDF document text
    • http://files.barrons-conferences.com/uploads/1/3/1/4/131409170/3066792.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/1/0433/7215/0947/files/gate_2020_question_paper_mechanical_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0557/4309/files/44816240118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8276/6743/files/81329859344.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9292/6873/files/15242254150.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9400/7201/files/biostatistics_daniel_10th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9900/4827/files/anaerobic_digestion_process.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9289/4115/files/27156223068.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8915/7537/files/megemagegagedap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4523/1515/files/8644219564.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0524/5597/files/14251979946.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9094/3902/files/18838741941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9301/7247/files/venodonivirotalujaxa.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_off00006488.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6488 5240 bytes
SHA-256: 7eb8a7fe58b5d8d25d4f1a30b7a014068824e9b495b18c99ebbd598aa58ede70
font_01_sfnt_off0000763a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x763A 10060 bytes
SHA-256: af599c1295a4cd6a6ce52b8e6cb365a4ce107a0830935a24c69bca4ee02fc88a

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