Malicious PDF — malware analysis report

Static analysis result for SHA-256 1986231484d00873…

MALICIOUS

PDF

48.4 KB Created: 2020-08-07 08:08:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 31353b5d4fd360380e1897dc44af9f85 SHA-1: bbb74025f75636581048abf6308e37e944e9adcd SHA-256: 1986231484d008734e96ec4a8cea511cf1c769b67ddff7e7b5f202fa9eb08322
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a known malicious URL, identified as a redirector for SEO link farming. The document body, though heavily obfuscated, contains a reference to the malicious URL and appears to be a lure for users to click on it. The ML classifier strongly indicates maliciousness.

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/wb?keyword=rangila%20rasul%20pdf In PDF document text
    • http://files.wissamsouss.com/uploads/1/3/1/8/131856134/guxazader-vemefobajumi.pdfIn PDF document text
    • http://files.flightinstructorpro.com/uploads/1/3/2/7/132710678/9dbc6bfd67bd.pdfIn PDF document text
    • http://files.maxluxeminklashes.com/uploads/1/3/0/9/130969231/veponipomakiraweju.pdfIn PDF document text
    • http://files.themoderndoublebass.org.uk/uploads/1/3/1/3/131379894/4169694.pdfIn PDF document text
    • http://files.leggingsusaonline.com/uploads/1/3/0/8/130813851/nuviraza.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5296/5792/files/histoire_du_canal_de_suez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3953/8851/files/naruto_the_last_torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8762/5369/files/panasonic_the_genius_sensor_1250w.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/medade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2289/8584/files/18671167785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2147/5738/files/kenifij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7952/4759/files/85168396142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/6869/9303/files/speaking_in_tongues_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5529/0270/files/convert_remote_control_ceiling_fan_to_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8168/6437/files/99920367068.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5820/0725/files/jajizokiwobupefujebakifo.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 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000073dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73DC 5216 bytes
SHA-256: 1073abc9fc671db2f6dc538ae530ae060a0899218c9b9bf4b4ebda92e328ca52
font_01_sfnt_off000085b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85B3 10220 bytes
SHA-256: c2ac5a81e2a5cfa3c150fe76ac73fb937a2bf0d71b313e81ad1bb3c1b32b38d2
font_02_sfnt_off0000a8d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8D5 2984 bytes
SHA-256: e34dd5ee0980fe9eef678464ba4b605723b0ca6a970f7cce958e55fb9041e17b

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