Malicious PDF — malware analysis report

Static analysis result for SHA-256 676cb06e1e2cdfbb…

MALICIOUS

PDF

44.3 KB Created: 2020-08-10 03:04:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d9827997a6201bd00d6b49ae40327beb SHA-1: 2ef0ff160b343d0ae8a6f9c514ac795f77e64980 SHA-256: 676cb06e1e2cdfbbba340688869aff6eec3d651181a3866a66b4e81db1adcd00
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links designed to appear as a link farm for SEO purposes, but the primary link redirects to known malicious infrastructure. The document body, though heavily obfuscated, contains the malicious URL, suggesting an attempt to trick users into downloading further content. 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/pify?keyword=libro+3msc+3+pdf In PDF document text
    • http://juxovesod.hudsonsteakhouse.co.uk/uploads/1/3/0/9/130969723/tumobu.pdfIn PDF document text
    • http://files.tollyho.com/uploads/1/3/1/8/131856949/8558521.pdfIn PDF document text
    • http://kifozij.wellbalancedfolsom.com/uploads/1/3/1/4/131452903/mebumawo.pdfIn PDF document text
    • http://files.impunity.site/uploads/1/3/2/6/132681204/lefopogi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9557/2126/files/47699451591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4419/9848/files/javascript_timer_countdown_with_seconds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4844/9686/files/paluvotedixubobodi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9033/7189/files/kurojaremajiwuvuvimojozod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7759/9383/files/turepawoxowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3584/1944/files/58010891436.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/2369/0916/files/dufanijifuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1414/4675/files/68983734785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3685/8776/files/53298020452.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8220/3801/files/54856883134.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/rowudojemarepidelibete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xutuxajaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3914/6662/files/exercices_articles_partitifs.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 8

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_off000063d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63D8 4788 bytes
SHA-256: 0360508b13301292565e5074faf9e859c0257046cdb41212728888f305c3c9f9
font_01_sfnt_off00007403.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7403 10080 bytes
SHA-256: 29797cbb9f29b0055e8b9d922a00f8a1d8cb8414aee983495f5adb2d6c841764
font_02_sfnt_off0000968b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x968B 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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