Malicious PDF — malware analysis report

Static analysis result for SHA-256 859f90e9c9d6ee65…

MALICIOUS

PDF

42.4 KB Created: 2020-08-03 11:13:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0e4c6aa6907ba9fdd85c3952a5654726 SHA-1: 74c08326736353b7d49be03b5fd620f4ac04a3fd SHA-256: 859f90e9c9d6ee658cad6ebabbf1d9562bf1d657a42ad6b747d97592166b0cb5
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service associated with SEO link farms and free download phishing lures. The document body, though heavily obfuscated, contains references to 'Indesign cs6 cracked' and URLs that are likely part of a campaign to distribute pirated software. The ML classifier strongly indicated maliciousness, and the presence of redirector links confirms a malicious intent to lead users to potentially harmful content.

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=indesign+cs6+cracked In PDF document text
    • http://files.mancostrails.org/uploads/1/3/1/4/131407530/29f0c433d2a9255.pdfIn PDF document text
    • http://files.hannahschenk.com/uploads/1/3/0/7/130738548/rexope.pdfIn PDF document text
    • http://files.theindependentbookseller.com/uploads/1/3/1/4/131453198/6096254.pdfIn PDF document text
    • http://files.activesupportresource.net.au/uploads/1/3/1/4/131437443/jaxuwesovor-rovomututovofi-gazokodafazonig.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/1/0432/8800/2710/files/68969251355.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9573/6988/files/korodejamisupovokekativab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3942/4665/files/62155250831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/test_1879eb6a-339e-4d45-a409-571cd94a4742.pdf?v=1594212285In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85583151980.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3341/9166/files/nintendo_switch_dns_2110_3127.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7428/8793/files/pokemon_leaf_green_codebreaker_codes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1582/3772/files/22695228081.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3986/7559/files/jotixapularasekirusok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1109/4174/files/82259485374.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4277/4938/files/45633179187.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fesitoxerevujadutag.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 5

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_off000066a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66A1 5232 bytes
SHA-256: 541321ae98577304b2400ff2e1648fa629e81c79d743c0688614abffa686d8de
font_01_sfnt_off00007885.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7885 10528 bytes
SHA-256: b526ed4834d06c9db59fe6e2a44516812f237fceba68e827c7abf466b7a919a6

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