Malicious PDF — malware analysis report

Static analysis result for SHA-256 62b20ac3eeb60c74…

MALICIOUS

PDF

38.7 KB Created: 2020-08-19 11:50:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2307fd8be2f61bf8584694cab15c7728 SHA-1: 9459207e61dd26fb6786c8d83502e762df65c3ba SHA-256: 62b20ac3eeb60c7437df79e3ff3c90082e2caf8101419ace9d4c41465a97427a
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The document body text and heuristics indicate a lure to download a form, which likely leads to a phishing or malware distribution site. The ML classifier strongly supports the malicious nature of this PDF.

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=certification+of+health+care+provider+fmla+form In PDF document text
    • http://files.peoplesmovementofpakistan.org/uploads/1/3/1/4/131438150/begarakuforema-mumugofixito-lemit.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/1/0433/4275/8056/files/thank_you_animated_gif_images_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/3722/4094/files/causes_of_world_war_1_essay.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6836/6760/files/33154361917.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1189/9551/files/wafunise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0542/5310/files/xiaomi_mi_air_purifier_2s_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6367/0939/files/achilles_tendonitis_handout.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6339/2921/files/69787978085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9618/7815/files/sajake.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 3

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_off00005d30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D30 5180 bytes
SHA-256: 6998a7f6657e323db876055c213877fe2b625f1913d40a9f89a1b5f3c92ee731
font_01_sfnt_off00006ea4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EA4 9232 bytes
SHA-256: 9a2f0d8245284b644e51ac007a3ee30e3f7c3d2b59b6ead64cf6a2c3eb400828

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