Malicious PDF — malware analysis report

Static analysis result for SHA-256 649e685bb588ef8e…

MALICIOUS

PDF

40.7 KB Created: 2020-08-18 17:19:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 75d260ce0ee2e41b7b6c98641af9c0f6 SHA-1: 301464c1c714bb473dba44e2706f608caef4964f SHA-256: 649e685bb588ef8e960f69fe526ab502ee35971c99c779bcaa933c22553d6a09
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a primary redirector identified as malicious. The document body, though heavily obfuscated, contains text and URLs that suggest a lure for users to download content, likely leading to a phishing or malware distribution site. The ML classifier strongly indicates maliciousness, and the presence of a redirector points to an attempt to obscure the final malicious destination.

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.com/pify?keyword=classroom+rules+and+expectations+template In PDF document text
    • http://files.mykmad.com/uploads/1/3/0/8/130814718/207497b8bcef.pdfIn PDF document text
    • http://files.thehealingwordchurch.org/uploads/1/3/1/0/131070560/togagomepokab-lupiviwini-zubonifa.pdfIn PDF document text
    • http://keraxexe.tyoshunbncompany.com/uploads/1/3/1/3/131384281/6809e0.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/1/0440/7482/7941/files/admiralty_chart_catalogue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2515/3698/files/botavijojipoko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tunamowari.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8447/8632/files/bipolar_disorder_indonesia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0149/4179/files/business_goals_2_teacher_s_book_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1685/5457/files/89145841888.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0083/7782/files/19358945525.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/buxidumex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8957/5588/files/2997735614.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 3

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_off000062f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F3 5192 bytes
SHA-256: 6323fb387374bc6202e946181b3840132dbc4f0d38f9d0a40358cd72d5963fb2
font_01_sfnt_off00007481.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7481 9928 bytes
SHA-256: f0d8c9ceb33d8d328b7eb35feba3bb829d3c417335c2062585837d0dbbf9712c

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