Malicious PDF — malware analysis report

Static analysis result for SHA-256 a57cde7b9fd639db…

MALICIOUS

PDF

40.5 KB Created: 2020-08-02 19:10:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7afe80b973b5027da6f503f399deefc1 SHA-1: 0ebeea04baf2148d4be77cc7bdad5c5c7a182624 SHA-256: a57cde7b9fd639db77b67b6c7ecc7cb45f0ab181e68474da1df3c5570ba6d6b9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically targeting searches for 'miele induction cooktop operating manual'. The primary malicious URL identified is https://ttraff.cc/wb?keyword=miele%20induction%20cooktop%20operating%20manual. This indicates a social engineering attack aiming to trick users into clicking malicious links under the guise of finding product information. No scripts were extracted, limiting the analysis of further payload delivery or execution.

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/wb?keyword=miele%20induction%20cooktop%20operating%20manual In PDF document text
    • http://files.sarahavalia.com/uploads/1/3/1/0/131070904/d0e9ec7c37.pdfIn PDF document text
    • http://files.cajunspleasures.com/uploads/1/3/0/8/130814308/2352734.pdfIn PDF document text
    • http://files.sueannecelebrant.com/uploads/1/3/1/4/131437351/26ff42c.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/1/0431/0604/2013/files/58708460764.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3282/8314/files/book_of_lies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0870/5187/files/csgo_viewmodel_generator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3888/3485/files/91867361230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4321/5767/files/xadifu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8814/2743/files/82085530446.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4538/8437/files/62137622484.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2469/4939/files/7841957940.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3105/1931/files/50596831528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/10548809775.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1270/1854/files/xezexorurovototig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6745/5128/files/97746382452.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_off00005fc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC8 5284 bytes
SHA-256: 2fdde77d40627602ccf057a6953fb328aa9414f0200a9eea5673531623defe8d
font_01_sfnt_off000071b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71B9 10412 bytes
SHA-256: d97cce1b401017c8bb7d01dac6d884dbc28badb0d53e7776bc80048935fe9977

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