Malicious PDF — malware analysis report

Static analysis result for SHA-256 8eadcb380f0ab4dd…

MALICIOUS

PDF

42.6 KB Created: 2020-08-08 10:46:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6a110b2f97a6bdfbc791f0d958f679fd SHA-1: 6ddb66c480ef601f6bd8d434608ad9fd3e2b9c61 SHA-256: 8eadcb380f0ab4ddb89fa7478b41cdbb6cc72242fc2bf931263bac1b723dfb29
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDFs hosted on Shopify. One critical heuristic firing indicates a malicious redirector link, specifically 'https://ttraff.ru/pify?keyword=makkar+ielts+writing+task+2+pdf'. This suggests the document is designed to redirect users to malicious infrastructure, likely for phishing or malware distribution, under the guise of providing IELTS preparation materials. No scripts were extracted, and the document body is heavily obfuscated.

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+writing+task+2+pdf In PDF document text
    • http://files.themessageofnabiisa.org/uploads/1/3/1/6/131606284/e5dd96afc57.pdfIn PDF document text
    • http://files.andrewjamesinteriorsuk.co.uk/uploads/1/3/0/8/130813317/nelamoroxif.pdfIn PDF document text
    • http://files.peterlynas.com/uploads/1/3/1/3/131383333/dovorami.pdfIn PDF document text
    • http://files.callanassociates.com/uploads/1/3/2/8/132816036/zagawemowanow-guvoj-kesojinetapexi.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/1/0429/6219/0499/files/fefogojajatorejuxinasajir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1030/9787/files/80364313748.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5511/9520/files/maryland_state_abbreviation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4089/7189/files/7_strategies_of_assessment_for_learning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8253/0472/files/ranomu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/3034/2806/files/calendario_escolar_asturias_2020_a_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4364/2792/files/old_mundane_stone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45251784546.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2117/1879/files/tozatorav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/telisupuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2564/4192/files/mibitosovetexanotab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3335/3627/files/valorizacion_de_residuos_organicos.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006849.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6849 5500 bytes
SHA-256: ed676cfa569a43902f6c0436a81a6ed253ab77342e33ba0da143c84ef98c07c7
font_01_sfnt_off00007b35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B35 10052 bytes
SHA-256: 2707039583acd2e118a6d6691ae5f558e453ad020663a70a8659efe2fe3cc4c4

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