Malicious PDF — malware analysis report

Static analysis result for SHA-256 18cd2411077f236d…

MALICIOUS

PDF

51.3 KB Created: 2020-07-31 13:06:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 70eea6c9c187c3c6419e851817b84b03 SHA-1: 60a4902da2658a2d6aeb645d082430ccb4bc1e4e SHA-256: 18cd2411077f236d3609d3714160903522786a3a38bf72206b07a1301834327e
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which point to a redirector service identified as malicious. The document body, though heavily obfuscated, suggests a lure related to 'Beehive class 9 pdf chapter 1'. The presence of many PDF links and a malicious redirector indicates a likely attempt to drive traffic to malicious sites, potentially for phishing or SEO manipulation.

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=beehive+class+9+pdf+chapter+1 In PDF document text
    • http://files.daviesfurniturecourt.com/uploads/1/3/2/6/132682883/jukudotelusa.pdfIn PDF document text
    • http://files.colleenlboyle.com/uploads/1/3/1/8/131857920/a2fa3f7a58e.pdfIn PDF document text
    • http://files.hodaemam.com/uploads/1/3/0/9/130969357/xixozotujera-suzibu.pdfIn PDF document text
    • http://files.belmonthighlibrary.org/uploads/1/3/1/4/131453990/xebegugozanujumi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/bovunidojosigil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4542/7102/files/26254892867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9834/9471/files/11841204854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5503/9135/files/54991557925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2270/1976/files/39646243039.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0862/0701/files/tupok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5638/1597/files/96850819649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4519/1841/files/6757860787.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7826/3718/files/fasefafeworenekux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4791/9522/files/zobulagodat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3021/6855/files/75418517294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5970/7037/files/51774371787.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3981/7890/files/xemurivow.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008028.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8028 5132 bytes
SHA-256: 7ce01edd8569e690ff4a03e40ea761f5e7ccc92724751fd83576240a8e6fc960
font_01_sfnt_off000091b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91B4 10120 bytes
SHA-256: 91b602b3037a85128dd2af3713f33a439cec26d4be8cac8bc282076598d8107f
font_02_sfnt_off0000b4ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4AD 2748 bytes
SHA-256: bd430654397ecdfebcc9893999aa4ed47253faafb40014c5eb9e02b1a13600cc

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