Malicious PDF — malware analysis report

Static analysis result for SHA-256 3eff44950f036778…

MALICIOUS

PDF

44.3 KB Created: 2020-08-09 06:12:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c2309c1d0079039e792a968dd7da456f SHA-1: f2386127690469b6e5645b6ad40fe48fb0d4f6cc SHA-256: 3eff44950f036778c7e2f1716a5f71ac9dd0b42a15d714db2be60acd9beb13ad
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous links, with a critical heuristic firing indicating a malicious redirector. The document body text and embedded URLs suggest a lure related to 'makkar ielts speaking pdf july 2020', which redirects to a malicious URL. This indicates a phishing attempt to redirect users to malicious infrastructure.

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=makkar+ielts+speaking+pdf+july+2020 In PDF document text
    • http://files.arttherapyderby.com/uploads/1/3/0/7/130739112/0b714ca6.pdfIn PDF document text
    • http://files.eurolotto-biel.ch/uploads/1/3/0/7/130776646/rujelexa.pdfIn PDF document text
    • http://files.pianorentaldc.com/uploads/1/3/1/6/131637679/wadufurawaxepolukol.pdfIn PDF document text
    • http://tanibefuz.harrisallen.org/uploads/1/3/0/7/130776445/negisikugadovomo.pdfIn PDF document text
    • http://files.gracechristianmusicfestival.com/uploads/1/3/1/8/131871583/namazokuselina_xigunubagizuka_fijitujabibasit_gaboponobowabul.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83390791822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0505/8976/files/nalepot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2973/2248/files/bls_algorithms_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1687/1326/files/accounting_ledger_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7602/5497/files/soxulidefotavema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6738/2687/files/62613877245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2389/1618/files/critical_appraisal_tool.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6955/5356/files/8049436562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9628/0983/files/additionsverfahren_aufgaben_mit_lsungen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7261/7637/files/pibagakizizudefawukogek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2077/1750/files/acca_manual_j_7th_edition.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 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_off00006303.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6303 5500 bytes
SHA-256: 7909dc465a8c333d380c6729a3bcb411408ea5bd0a2027e478801f291b76c1fe
font_01_sfnt_off000075d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75D7 9392 bytes
SHA-256: adfb62c931772981b9c317c9d108636e858f012eb3ba9e8239a5330193c0bd0c
font_02_sfnt_off0000960c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x960C 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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