Malicious PDF — malware analysis report

Static analysis result for SHA-256 0279907ca88cc022…

MALICIOUS

PDF

46.1 KB Created: 2020-08-08 06:40:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fd8309a773c8b35e29961e024ed8cf77 SHA-1: 57c52ee759737bfa95c319d7ebf27cafc48b9429 SHA-256: 0279907ca88cc0222f4c567395ad7a8a595b1858bda0d263e4f9b7f6e02c4d2d
194 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, many of which point to a redirector service known for malicious activity. The ML classifier also strongly indicated maliciousness. The primary IOC is the redirector URL, which likely leads to a phishing or malware download page. No scripts were extracted, but the embedded links are sufficient to indicate a malicious intent to redirect users to harmful content.

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=br%25C3%25BCche+regeln+pdf In PDF document text
    • http://files.mycupidclothing.com/uploads/1/3/0/7/130775556/8720055.pdfIn PDF document text
    • http://files.tlfamilydetective.com/uploads/1/3/0/7/130739826/3382453.pdfIn PDF document text
    • http://files.rivercliffestates.com/uploads/1/3/1/4/131438499/7897259.pdfIn PDF document text
    • http://files.russellvanecek.com/uploads/1/3/2/6/132681501/4916379.pdfIn PDF document text
    • http://files.integritycincinnati.com/uploads/1/3/1/4/131438835/7891521.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/1/0434/4211/0631/files/bible_history_old_testament.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8348/9687/files/kolomilifudazig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7233/1675/files/purutediv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2684/9700/files/opsc_assistant_section_officer_exam_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5349/8019/files/logupiwezibirovokux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4994/3202/files/sizuronitovel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4097/1674/files/26335884137.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5969/9109/files/dosowe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1184/0927/files/27395343555.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4954/1013/files/treatment_of_meconium_aspiration_syndrome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8761/8463/files/66407598008.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4817/9611/files/37958790936.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_off00006b47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B47 5196 bytes
SHA-256: 7f4d64e9e4a87ab746d43cf133ddf1a85dcb044514bfd7199c586596bb4495c9
font_01_sfnt_off00007cc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC3 14684 bytes
SHA-256: 4ee132746045e7fe65ff98f9288a855992822a3d2638aa960d5621b8f78bab91

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