Malicious PDF — malware analysis report

Static analysis result for SHA-256 598987302a1a0ff8…

MALICIOUS

PDF

50.9 KB Created: 2020-08-07 04:25:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 10d2d4c37a7ae0178fbe45d9a8b24177 SHA-1: 084cfd4845b0c913d41270b0c8060a9bcf97a59c SHA-256: 598987302a1a0ff85bdf8c949509dbca0cfefe1e708306a0d2aa5d9838d7914a
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a known malicious redirector. The ML classifier also flagged this PDF with high confidence. The document body contains garbled text but includes the malicious URL, suggesting a lure to a malicious site or a link farm for SEO manipulation.

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=black+boy+wright+pdf In PDF document text
    • http://files.perfectscoremedia.com/uploads/1/3/2/6/132683000/vurujijixes.pdfIn PDF document text
    • http://files.gospelquebec.com/uploads/1/3/1/4/131408942/nigevezud-rixomusurir.pdfIn PDF document text
    • http://files.proplumbingmesa.com/uploads/1/3/0/7/130775387/maziwuwuze-bagitugodolad.pdfIn PDF document text
    • http://files.mchschoralprogram.com/uploads/1/3/1/3/131378776/6666349.pdfIn PDF document text
    • http://files.vacanzeitaliane.net/uploads/1/3/1/4/131414561/towedax.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/1/0432/9763/6512/files/honda_self_propelled_lawn_mower_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0976/7584/files/37923111306.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/70143681561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/addition_and_subtraction_word_problems_year_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4275/7029/files/26202831214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4953/4111/files/8th_grade_earth_science_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7341/4055/files/28510807423.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8538/9206/files/66180587190.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7932/6103/files/11244573201.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4620/7650/files/mipojanewas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wetitoditasenubekuxon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5965/8398/files/vopobexemadixam.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 4

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_off00008861.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8861 5684 bytes
SHA-256: d5adc46c58288cc88fecc1159da89f6b29f7e05d4392637b3bca48dcb018ecf7
font_01_sfnt_off00009bd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BD4 10112 bytes
SHA-256: e7b24faa6e8f129f1ea3e7c79abb0f2ee907644972c11cc723708b05433f2708

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