Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3450607a7c2ae12…

MALICIOUS

PDF

45.2 KB Created: 2020-08-23 11:19:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d6842d77fb2ad19ac3db7b0e5b678072 SHA-1: c035cae277a69c82b651dfcbd546e3e9ef15741a SHA-256: a3450607a7c2ae12d100f4ceefef58239cf4494d5ecf51ec42f9512f51cb886d
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one critical heuristic identifying a link to known malicious redirector infrastructure. Another critical heuristic indicates a large number of external PDF links, suggesting a link farm or distribution mechanism. The ML classifier also flagged this PDF with high confidence. The primary attack pattern involves luring users to click on malicious links within the document.

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=anaconda+python+2.+7+mac In PDF document text
    • http://befetus.kdwineimports.com/uploads/1/3/2/6/132681670/8a0d7af37b92.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.fontrix.comhttp://www.nhncorp.comIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2430/9659/files/islamic_banking_system_in_pakistan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7423/1199/files/gamubemobijovatowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8418/4728/files/24678775878.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2970/7422/files/apprendre_anglais_grammaire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/5063/5162/files/curious_researcher_8th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9707/9460/files/61398922561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2218/6656/files/scrum_master_resume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6429/4557/files/xoxebabatex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/6845/1992/files/bearing_number_specification.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/motaxabuxe.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B51 5344 bytes
SHA-256: deb0beecfe8f9f5831f53e16fc721cb6418b1858ec37405fb8dede1a6b11e54f
font_01_sfnt_off00006d61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D61 2512 bytes
SHA-256: a085dd2db8ec6f0d5e8e3a82ba2d025b04522c634a9e0cb47d4e6dc3228ecc85
font_02_sfnt_off0000784c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x784C 10588 bytes
SHA-256: ac6a1864ee70dac3f5e0e1c82023ee464f54c35bd7f25922caaaacf75f5c3b3e
font_03_sfnt_off00009c78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C78 2944 bytes
SHA-256: 98ab01d06b842533f486cfded5c40b62d31d57ac50674bb4cb06984bc554c8f5

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