Malicious PDF — malware analysis report

Static analysis result for SHA-256 2661225cac001807…

MALICIOUS

PDF

46.5 KB Created: 2020-08-08 03:54:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 636327b184fa0986a308aa6979a9bf9f SHA-1: b4481304d4076b450cef74506c482118bfb3b1de SHA-256: 2661225cac001807cb2f66749e6975b267b96336a93d65c80740faa8e2ae89d7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, forming a link farm. One of these links directs to a known malicious redirector, suggesting an attempt to lure users to malicious content. The document body itself is heavily obfuscated and contains metadata indicating it was generated by wkhtmltopdf, a tool often used to create SEO spam or phishing documents.

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.cc/pify?keyword=las+aventuras+de+capulinita+pdf In PDF document text
    • http://files.genuinely-younique.com/uploads/1/3/0/8/130814127/8999369.pdfIn PDF document text
    • http://tiwukux.ghostinspectors.com/uploads/1/3/1/4/131437792/tanoleg.pdfIn PDF document text
    • http://files.mikesmeatmarket.com/uploads/1/3/1/8/131871786/09fac.pdfIn PDF document text
    • http://files.shaunyates.com/uploads/1/3/1/3/131398308/jitipejekerorisu.pdfIn PDF document text
    • http://files.shantzmusic.ca/uploads/1/3/1/3/131384635/jotarukudax_gasogixobazax_sunekal_dodovutip.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/1/0437/8099/7269/files/gojulowonolam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2959/2214/files/dog_knot_pullout_compilation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8940/2779/files/gitagu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8871/4653/files/antonyms_and_synonyms_list_with_bangla_meaning_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5426/0633/files/pathfinder_horror_adventures_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5203/9328/files/35229480363.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4675/6774/files/mathematical_puzzles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5420/2018/files/53866855782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4044/0471/files/14741008787.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5844/5979/files/public_health_risk_assessment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7162/5621/files/rerusiwosubevitoxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0862/9663/files/kujemabuzafezesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7946/7162/files/transport_phenomena_bird.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_off00007445.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7445 5148 bytes
SHA-256: f0d8bd505dfb38126a2b742263cbf50556db8bcdf837a5965e5c1887622eee7f
font_01_sfnt_off000085e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85E6 11456 bytes
SHA-256: 55cfed4b0a3beb91a26f83ae15ad46412b444a2d1bb0604e75a480799bee1579

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