Malicious PDF — malware analysis report

Static analysis result for SHA-256 73eca922e722e799…

MALICIOUS

PDF

48.2 KB Created: 2020-08-14 01:39:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c000a1f6956a66a6c5c731ae50db06b6 SHA-1: 2ccf29a18b76ca75a3c0ce9ae17508b7530ff310 SHA-256: 73eca922e722e799ed3c90aef4ab5e148b41067133fd1ff3a33e3a98e5fe7b1a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which point to redirector infrastructure designed to obscure the final malicious destination. The document body, though heavily obfuscated, contains text suggesting a lure related to 'graphic design images free' and includes the primary malicious URL. The ML classifier strongly indicated maliciousness, and heuristics identified it as a redirector and a link farm.

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=graphic+design+images+free In PDF document text
    • http://files.dizzycoach.com/uploads/1/3/0/8/130874129/redesoba-xurun.pdfIn PDF document text
    • http://vebek.madartglass.com/uploads/1/3/1/8/131857920/013bfe4e81da4.pdfIn PDF document text
    • http://lekulut.tutorslink123.com/uploads/1/3/0/8/130813848/pogesanopama.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3260/7894/files/70744504604.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1568/2717/files/blender_merge_vertex_groups.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2247/5687/files/tutux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5649/6794/files/71116287856.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6924/3549/files/definition_of_authentication_information.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/82011542479.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4989/1478/files/rasikumixunowabezu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8370/3206/files/72253304551.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8951/6962/files/cambridge_audio_dacmagic_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8386/6007/files/loan_template_agreement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7206/8520/files/marikugirokefate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8981/9800/files/conjugaison_verbe_etre_et_avoir_au_present.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007042.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7042 5168 bytes
SHA-256: dd564717d14adbc8114c3aacfdc8d870c6c183eaf7c48ce5a54726cddb982163
font_01_sfnt_off0000819e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x819E 10536 bytes
SHA-256: 6205897e0ab45dc42e5987f639f1fc6af00e719ee2552dde13cac6f5e257ef89
font_02_sfnt_off0000a5a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5A3 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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