Malicious PDF — malware analysis report

Static analysis result for SHA-256 6de6a9f0cb185353…

MALICIOUS

PDF

50.5 KB Created: 2020-08-21 06:25:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 274866750e7fb810eefe5e8088e78663 SHA-1: 5d11ea3ebb0b830fbc9cd1ec11371ff0a1d1f1b0 SHA-256: 6de6a9f0cb1853535c2356a45ab32c8571343ea2e972e7bb6c2187265de012a6
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to an SEO redirector infrastructure designed to obscure the final malicious destination. The document body and heuristics indicate a lure for cracked software, specifically mentioning 'Nord vpn cracked apk 2019', which redirects to a malicious URL. The presence of multiple PDF links suggests a link farm tactic to improve SEO for malicious 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=nord+vpn+cracked+apk+2019 In PDF document text
    • http://jozelo.courtneytezeno.com/uploads/1/3/0/7/130776885/repef.pdfIn PDF document text
    • http://files.jacktrelawny.com/uploads/1/3/1/0/131071114/ef7462434.pdfIn PDF document text
    • http://files.angieskonacoffee.com/uploads/1/3/1/1/131164052/gufegivo.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/1/0434/7723/7920/files/badminton_court_size_and_net_height.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5349/8019/files/73181809892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6815/2216/files/isabel_marant_size_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8450/5498/files/mixitopusisix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2924/9694/files/translate_from_spanish_to_english_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2286/7880/files/sel_limfosit_adalah.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/30023545192.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3654/9018/files/10333748839.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1350/4150/files/nuvenevasifadegumojonire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0461/5066/files/gitirufajakexusebozonega.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off00007186.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7186 5432 bytes
SHA-256: 756688b1d5ad009224de6d0eb98b7ef2cbd374379830fdf490f5255a6b7102cc
font_01_sfnt_off00008421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8421 10292 bytes
SHA-256: a793e10ecb4a13a28b0ed982f8c2314195320cd7b1e1f19237529f703221317a
font_02_sfnt_off0000a78b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA78B 16144 bytes
SHA-256: 2a5f1667c2e343500efde63e3dd6a136498333968b1680966ac5eb34589f1174

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