Malicious PDF — malware analysis report

Static analysis result for SHA-256 520f608216237fbe…

MALICIOUS

PDF

56.5 KB Created: 2020-08-03 15:28:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5fdd8e41976ec4d4dc4205a24f413d68 SHA-1: 37a319858787248135ae58d456bbb3b337e1e3a4 SHA-256: 520f608216237fbe9bbfa0f5c4aea1732b4e5d1927656b8996f222c384b20396
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. This suggests the document's primary purpose is to lure users to malicious websites. The presence of a link farm further supports this, indicating an attempt to distribute malicious content or conduct phishing operations. No scripts were extracted, limiting the analysis of direct payload 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.ru/pify?keyword=%25C3%25A7al%25C4%25B1ku%25C5%259Fu+kitap+pdf In PDF document text
    • http://files.mysccafe.com/uploads/1/3/0/7/130740517/wemaz_gapiwasagol.pdfIn PDF document text
    • http://files.gaby-rodriguez.com/uploads/1/3/2/6/132681201/libig-zevawaze.pdfIn PDF document text
    • http://files.greenwichyouthcenter.org/uploads/1/3/1/3/131381078/1ab98d8ed47.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/1/0427/8370/3206/files/72253304551.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6815/4278/files/starcraft_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4329/9234/files/21178734291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81256704061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23063093424.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3645/8654/files/china_town_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2493/3283/files/wubewokuvabowonefup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9911/2095/files/26113870152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0091/2283/files/telugu_rasi_phalalu_2015_to_2016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2649/7182/files/gumujagaxaberifekeluveb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8347/2802/files/72034104090.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5670/9288/files/34153045391.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7386/2821/files/tipadobojobetavevavin.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 2

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_off00009508.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9508 5200 bytes
SHA-256: f0ac6a33e459b8e111b890bba62581711b0c671d81de91521b374ed2a9e243aa
font_01_sfnt_off0000a658.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA658 15204 bytes
SHA-256: 52e3199c308c23e8798af78deefbf863600bdc87100fdc5324ee22be393fd4e9

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