Malicious PDF — malware analysis report

Static analysis result for SHA-256 1245e042fa25a2ab…

MALICIOUS

PDF

64.9 KB Created: 2020-08-20 13:58:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b1bf2317446d2a789e63594db2385820 SHA-1: 63d6ca93390ebd129f4c6ec4c2bbfeeb75fd1d4d SHA-256: 1245e042fa25a2ab5e815029e8836f6d05e92cc068a991bac823515267f503dd
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains a URL that matches the redirector found in the heuristics. This suggests the primary purpose is to redirect users to a malicious site, likely for phishing or malware distribution.

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=areas+sensoriales+de+la+corteza+cerebral+pdf In PDF document text
    • http://fodar.louisianactf.org/uploads/1/3/0/9/130969858/af42658bd7b6.pdfIn PDF document text
    • http://fivaj.whakamaramaschool.com/uploads/1/3/2/6/132682892/zefibe.pdfIn PDF document text
    • http://files.stjohnclare.org/uploads/1/3/1/1/131164460/biwesuf_nenabesunu.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/1/0434/4253/6604/files/doviwin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1247/8360/files/piratolalapuzutised.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3915/2535/files/dixututisusuxudimaruma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1631/4277/files/69545668161.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0158/5570/files/waxewowidapaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5227/7670/files/78845122509.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0477/1999/files/bubulubole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8578/3447/files/android_close_keyboard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2327/0042/files/sebakamosisego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2513/6792/files/78480586405.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8150/7740/files/mazoxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5180/9957/files/bamexidarigemivolejijufuj.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_off0000bf20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF20 5328 bytes
SHA-256: 36ac73473087b1b8d74cc2ab7c5dd73dbce8b958a603012100d883ba96ab62f1
font_01_sfnt_off0000d14d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD14D 10236 bytes
SHA-256: 183741d93627ea7fc0e20b953b6c3ac08fd2bfc8620d361c8ed22b2df1109688

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