Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad4e4bf0afb3d759…

MALICIOUS

PDF

33.9 KB Created: 2020-08-17 02:52:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 77bff518908468b6a74770ee26c4e5e9 SHA-1: c29201d60efd2ea262cda4d19a39cb09ea0dda5c SHA-256: ad4e4bf0afb3d75978cca713e54ea0e5399cd0f40c6b7ac27665bae908c21bbd
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including a known malicious redirector. The primary malicious link is to 'ttraff.ru', which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains the text 'Pepper jack cheese sticks nutrition information' and the malicious URL, suggesting a lure to a potentially malicious site disguised as informational content. 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=pepper+jack+cheese+sticks+nutrition+information In PDF document text
    • http://files.clc-photographic.com/uploads/1/3/0/7/130738568/rofumilugumivi_padiwima_tamulenasoxo_betorokarebabiw.pdfIn PDF document text
    • http://files.justinecelebrant.co.uk/uploads/1/3/1/1/131164081/2265427.pdfIn PDF document text
    • http://files.aspatuckgardens.com/uploads/1/3/1/8/131872087/2a6033dbab62.pdfIn PDF document text
    • http://dubuvumo.missgojo.com/uploads/1/3/1/1/131164250/558862.pdfIn PDF document text
    • http://visule.fitkidtext.com/uploads/1/3/1/4/131437736/5203652.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/1/0434/5207/2086/files/dazumavokekoso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6152/7206/files/journal_psoriasis_vulgaris.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2812/5595/files/botawikufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7555/0876/files/38254716284.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6629/2389/files/xekobererada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8649/5397/files/gidavusikoxukibejudon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3431/9776/files/94936650852.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 6

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_off00004500.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4500 5364 bytes
SHA-256: 7baf5eef46910e8e9026688c747f04ea25e22f35ec1c2931f53906769442ce32
font_01_sfnt_off0000571c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x571C 10516 bytes
SHA-256: ad74ec0ac89be1bb487cab007717ed35edf2fcc14d49cdb420eab9d1856a9415

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