Malicious PDF — malware analysis report

Static analysis result for SHA-256 dce62425bd0a720d…

MALICIOUS

PDF

67.0 KB Created: 2020-11-19 01:40:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: d15e0188b3e70f198c99819d0c20bcf2 SHA-1: 999a9bf939305cc1904b59b6435708fa17a48c31 SHA-256: dce62425bd0a720d5ab65d6d08108a206ca7fec026493a44015be3e9f0bdc93c
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link farm and an SEO redirector, indicating an attempt to drive traffic to a malicious URL. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were directly extracted, the PDF structure and embedded URLs suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafftec.ru/strik?utm_term=sekiro+lump+of+grave+wax+farm PDF link annotation
    • https://niramividaro.weebly.com/uploads/1/3/4/5/134517418/rikabuj_mugusuzenur_rekufomolune.pdfIn PDF document text
    • https://kowabimope.weebly.com/uploads/1/3/4/3/134359524/vomuv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/new_american_standard_bible_catholic.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e71cc0b-6516-465a-a8de-e7b0bc49a376/xisuxasipa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4dd0c605-4771-48fd-8682-a0b99ce87f98/23731348688.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e49e428-7bbf-4971-ab2d-b6a920d33529/nahmias_production_and_operations_analysis.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/tea_tv_hacked_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/45645091297.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de46b99d-78bf-4dff-9d36-af8e9289696a/house_of_night_book_4_online_free.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB6A 5428 bytes
SHA-256: 73d2275efc1a5c3eedd6bafa57abb9f963e385fcb7aa6c1af716d2a36e49eb69
font_01_sfnt_off0000ddea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDEA 9364 bytes
SHA-256: 0ac10cb424019cca65d1f0f2def1f5d6d5677c0e9c37f8c9a84b8947586e43f3

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