Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e83a3a57dffda65…

MALICIOUS

PDF

44.8 KB Created: 2020-08-17 01:18:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1e4a833bd5142436bf3e70281d72a0ea SHA-1: d907e74ba67f15548b5b03f9bc83169d1523fbb0 SHA-256: 5e83a3a57dffda65f540b03e0492640e6209a979879352c81369d4ae3436a98b
194 Risk Score

Malware Insights

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

This PDF document contains numerous links, many of which point to a redirector service known to host malicious content. The document body and embedded links suggest a phishing attempt, likely to trick users into downloading further malware or providing sensitive information. The ML classifier strongly indicated maliciousness, and the presence of redirector links confirms a malicious intent.

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=pilot+aptitude+test+questions+pdf In PDF document text
    • http://files.northeastchristiancollege.com/uploads/1/3/2/7/132740250/ralarumekaxigu_kevibazo.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/1/0431/7659/1509/files/16115195021.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2813/5592/files/velivunulilutedag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1708/3802/files/35948806384.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6211/7023/files/27047289235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5222/6974/files/mewezemesavatawurobuzus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0785/2192/files/72975919827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7937/6798/files/34812965628.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5077/0333/files/4._4_biomes_worksheet_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/9224/2588/files/past_simple_present_perfect_exercises_intermediate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5612/8412/files/30270101289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3503/3757/files/clinical_aromatherapy_jane_buckle.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_off00006984.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6984 5064 bytes
SHA-256: 6273692087b53e7721552542d572dae33028a098873da9a957be090d5f8fbf81
font_01_sfnt_off00007ac7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AC7 13936 bytes
SHA-256: 04416c06480388d7e367f29ebdc37aee5620d7f81c0a66b6c5def6fb89013069

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