Malicious PDF — malware analysis report

Static analysis result for SHA-256 1847b8ee468f321c…

MALICIOUS

PDF

42.4 KB Created: 2020-08-05 05:54:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 675517eca8f892bbd51f9af218f7438f SHA-1: c2ecf93a36935afdbf5ea7ca3f904d2f21e37d6c SHA-256: 1847b8ee468f321c1af077a92ca3edcb9fa122fdc60a768c4b84db43ada4184d
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirection and a link farm, suggesting a phishing or scam attempt. The embedded link directs to a known malicious redirector, which is likely intended to lead the user to a malicious site under the guise of a free download. The ML classifier strongly supports the malicious verdict.

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=circuit+training+workout+for+beginners+pdf In PDF document text
    • http://files.monashgully.net/uploads/1/3/1/3/131380482/xipuzogofod.pdfIn PDF document text
    • http://files.unitykcnorth.org/uploads/1/3/1/6/131606260/puvagu_jikanajuna_dumevefik.pdfIn PDF document text
    • http://files.busybeeorganize.ca/uploads/1/3/0/9/130969004/gojebifazalomo-maxurapokenoxo.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/1/0433/3328/8088/files/rajenisuvad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4156/2522/files/move_file_in_linux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1947/4856/files/technical_analysis_of_stocks_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7439/6063/files/xemolutasojonarezovuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1828/8285/files/24153911637.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9496/6436/files/6332612789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3910/4929/files/dunexugura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/46614377503.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9703/0817/files/45034800438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5431/6197/files/mowalofekemanawizexiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6081/3208/files/gauge_girl_training.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_off000065db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65DB 5492 bytes
SHA-256: 604f8b43696b2453a7e01fc0c2b262c123f63faa6f8f9d97d23980559fc90014
font_01_sfnt_off000078ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78AB 10380 bytes
SHA-256: 161f986d9f53e4174679cbeed570c3b64ccaa634bcec21798b930c9c5abb891f

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