Malicious PDF — malware analysis report

Static analysis result for SHA-256 f360fb7aeb6cdda8…

MALICIOUS

PDF

51.3 KB Created: 2020-08-11 03:05:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fa847e06200358a7d51f54f93d6ccb32 SHA-1: bc4d752f4693c38f78253529f2752a63e8e90128 SHA-256: f360fb7aeb6cdda8efca880bd8bab4c8a6281e246ebf90d670fbbbb02b190b3d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a prominent link that redirects to a malicious URL, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same URL, suggesting a lure for users to download a 'free PDF'. The primary attack vector appears to be social engineering via a malicious link.

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=biblia+de+estudio+diario+vivir+reina+valera+1960+gratis+pdf In PDF document text
    • http://xamor.solfeggiohypnosis.com/uploads/1/3/0/8/130874493/xoguvutilaw.pdfIn PDF document text
    • http://zasivida.annemcmillslighting.com/uploads/1/3/2/3/132303382/8208981.pdfIn PDF document text
    • http://bilawumad.greenapplegarden.org/uploads/1/3/0/7/130739590/xosekemomu.pdfIn PDF document text
    • http://gupajetuw.slabhappyluress.com/uploads/1/3/1/0/131070115/126027.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/1/0430/9732/5732/files/97782573777.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tovetutokukike.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6554/8708/files/fageguzatokamejidelew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9740/7126/files/dymo_labelwriter_450_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6562/9077/files/71033522699.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0876/1751/files/gcse_biology_revision_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4323/9589/files/degivimorugelilevele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9280/7590/files/69875379323.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/15591357352.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3581/9173/files/tomufesuvepopefitafilekos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2145/0914/files/libro_aura_descargar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4900/0864/files/35459120858.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 1

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_off00008476.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8476 5964 bytes
SHA-256: 5bd13f2dd2e30ca48176a9594def059247d36980897641cf25cc41ccb7123578
font_01_sfnt_off000098cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98CB 11272 bytes
SHA-256: 5e4ef95f7c7fed8bc8e6e08cafdc468958c987de1b311f894f126afe035bfeaa

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