Malicious PDF — malware analysis report

Static analysis result for SHA-256 83651f367c69c696…

MALICIOUS

PDF

44.0 KB Created: 2020-08-12 08:24:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 68434cbfd91df6f1ab2e48bfa5908601 SHA-1: 680380e77ca3152dde1f9514024437a4b419905d SHA-256: 83651f367c69c69611703e1d6c71962e6eeacf4aaf2d03eb69facdc97aa4f43b
194 Risk Score

Malware Insights

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

This PDF document is designed to appear as educational material but contains numerous links to a redirector service, which in turn points to a link farm of other PDFs. The primary redirector URL is https://ttraff.ru/pify?keyword=beginner+reading+comprehension+worksheets+pdf, which is flagged as malicious. The document's structure and embedded links strongly suggest a phishing or scam attempt.

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=beginner+reading+comprehension+worksheets+pdf In PDF document text
    • http://files.stephanvandertoom.nl/uploads/1/3/1/4/131454190/1404726.pdfIn PDF document text
    • http://files.bereangracechurch.com/uploads/1/3/0/9/130969699/dbfb4aa.pdfIn PDF document text
    • http://xivupat.littlepicassobaltimore.com/uploads/1/3/1/6/131636725/2101235.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/1/0429/5114/7676/files/bewavevabufubaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5444/8286/files/wusixapegapajowedopejave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/betuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3485/3021/files/balopeguw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0633/4888/files/gisulege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7016/8986/files/puxodudi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6131/2676/files/zezegasopopisonarabawulaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1755/0499/files/juvarugovinogo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7958/2374/files/weight_gurus_app.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/34111348107.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8406/3654/files/ambiente_de_trabalho_do_windows_7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3137/8592/files/16251503044.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/dewalt_planer_dw735_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6402/4470/files/14153950378.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 4

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_off00006b52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B52 5744 bytes
SHA-256: 851e41ae893e5f92ae646d69ccd0816ddca2bd1414c7ce9583eaacfbfc61e569
font_01_sfnt_off00007ec2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EC2 10060 bytes
SHA-256: d1d0627ee13814d88008885db158fc8c91282dfd6c04539e41658abcd54133c6

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