Malicious PDF — malware analysis report

Static analysis result for SHA-256 83ddb1b5faf65d16…

MALICIOUS

PDF

40.3 KB Created: 2020-08-10 13:42:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 726d0d03ba2a24161c5eede962f5700b SHA-1: 87e29041cb0391bf51b2f99992fae49949be6113 SHA-256: 83ddb1b5faf65d16940fccc0bdc314b04b1fe34ac9fc21b6021b4fa6dfdeffc9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to a redirector service designed to obscure the final malicious destination. The primary lure appears to be a fake download for an algebra textbook, leading to the URL https://ttraff.com/pify?keyword=beginning+algebra+12th+edition+pdf. This indicates a phishing or scam attempt, likely using the PDF as an attachment in a spearphishing campaign.

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=beginning+algebra+12th+edition+pdf In PDF document text
    • http://files.dockconnectionllc.com/uploads/1/3/1/8/131856757/010efe6123f0.pdfIn PDF document text
    • http://files.mycpajason.com/uploads/1/3/0/8/130874012/7226ecc433df.pdfIn PDF document text
    • http://files.brendascreations.org/uploads/1/3/0/9/130969053/vodilitim_dizuz.pdfIn PDF document text
    • http://files.kimfairbournmusicstudio.com/uploads/1/3/1/4/131454012/pezuf_jupixusagegegif_patigojed_xejedapilepul.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/1/0428/3862/2375/files/satidoti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6105/1546/files/lutitadikulolifibefapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4849/3475/files/toyota_rav4_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/insurance_company_annual_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9912/7959/files/bhikkhu_nanamoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gifizazuxapi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3503/1712/files/88377422121.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6638/3768/files/certified_information_systems_auditor_cisa_cert_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6553/1806/files/wukugofavopelodon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8638/0197/files/54189266890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7853/2758/files/kptcl_junior_assistant_previous_year_question_papers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1808/2709/files/jiramolurizitogakuwaf.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_off00005d66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D66 5496 bytes
SHA-256: d3c0bcb7f65b37d9c4434df1474d73532184d238527789bd91d533839cf3b0c6
font_01_sfnt_off00007013.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7013 10244 bytes
SHA-256: e64d1b072755de5ec3f16eb900315fb19ed8229f176c2aa2fd5cb2f153516c4d

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