Malicious PDF — malware analysis report

Static analysis result for SHA-256 1652c4be04ee4e2c…

MALICIOUS

PDF

41.4 KB Created: 2020-08-05 10:08:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 92e1cd48663ce78aa56b7b20911e9b67 SHA-1: 76f75786af61554dc7e47c5dde8eb60ff1acf2b4 SHA-256: 1652c4be04ee4e2cc53c755c24fa0cbcfcbe1489749fc4c12c3c1975ebccc226
194 Risk Score

Malware Insights

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

This PDF document contains a large number of links, many of which point to a redirector infrastructure. The primary redirector URL is identified as malicious and is used to lure users into downloading further content. The document body itself contains the malicious URL, suggesting an attempt to disguise it as a legitimate download link.

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=benim+hocam+co%25C4%259Frafya+soru+bankas%25C4%25B1+pdf In PDF document text
    • http://puneja.eastbaymf.org/uploads/1/3/0/7/130775387/jigapimuzumuvevosif.pdfIn PDF document text
    • http://files.reishorerealty.com/uploads/1/3/1/4/131483153/rarumadakapojib_wupipobexe_zidemavifijo.pdfIn PDF document text
    • http://gorosoku.wildflowermoonfarm.com/uploads/1/3/2/7/132740892/4206459.pdfIn PDF document text
    • http://files.lilogisticscenter.com/uploads/1/3/1/6/131606135/pidet_kedef_ralofa.pdfIn PDF document text
    • http://files.fishnfrolics.com/uploads/1/3/2/8/132814906/fee1095655.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/1/0431/2583/3882/files/26902659691.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8548/8543/files/10984605925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53262414385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7194/7423/files/strength_of_materials_objective_questions_and_answers_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6859/6124/files/2056377211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7019/2802/files/mibutuserudadodudiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1819/6891/files/elements_of_electrical_engineering_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6053/5196/files/36493712400.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3136/2725/files/pevorakafanaxoko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6450/0122/files/xixewilewonitola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3876/0342/files/tasovatutidun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/34662310213.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3543/4901/files/42123583019.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000547d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x547D 5980 bytes
SHA-256: 2b8cbd52103c0ed54032f98134a5fd8b21c5b37cf89cbf82c50f55a40866ba2e
font_01_sfnt_off000068b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68B3 1936 bytes
SHA-256: cf50d13c5c21d2e34fba0d9dd21119d4839fc35fdaebfe62cbacf51850cc328d
font_02_sfnt_off000071f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71F2 11644 bytes
SHA-256: 5964f013fa97492ed25d8f34695e42ad5ddc39ec591f7213a1092b5ff5a50eff