Malicious PDF — malware analysis report

Static analysis result for SHA-256 43465d7d844c563a…

MALICIOUS

PDF

68.4 KB Created: 2020-08-22 04:49:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 31babcca04b659f3eb7a8959e84b7678 SHA-1: 42adf79e53e19a9c79828156ab170ddb8ba8a46f SHA-256: 43465d7d844c563a274b6a187ca4caa6459f37206727df9985eb1989a87a3ec8
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of these links, 'https://ttraff.com/pify?keyword=apollonio+rodio+argonautiche+pdf', is identified as a known malicious redirector. The presence of a link farm and a malicious redirector suggests a phishing or malware distribution attempt.

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.com/pify?keyword=apollonio+rodio+argonautiche+pdf In PDF document text
    • http://tonilabun.estatecomputers.net/uploads/1/3/2/8/132816066/kufonosudasemago.pdfIn PDF document text
    • http://files.nayaraduran.com/uploads/1/3/1/6/131607163/gonakepefurigasokog.pdfIn PDF document text
    • http://subotu.catcaricature.studio/uploads/1/3/1/3/131398252/xurutizidumirebox.pdfIn PDF document text
    • http://files.islandbeautyportland.com/uploads/1/3/0/9/130969243/522dd448b29a.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/1/0432/4157/0463/files/history_of_seventh_day_adventist_church.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6072/1829/files/fuxinuvojaredakevetosiwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3791/7345/files/toxaxivasobovovud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0564/8807/files/arrangement_of_periodic_table.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7998/1470/files/locofuria_comics_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0252/7897/files/lekemotolowenuxiro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3885/0724/files/aaos_dvt_prophylaxis_guidelines_2016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/95173244539.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_off0000c05f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC05F 5228 bytes
SHA-256: b761401c2dc623ca9dab47d1df1598604b8c61081128af17b0d2fb55394f9e3e
font_01_sfnt_off0000d21c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD21C 18968 bytes
SHA-256: 8332a7d5f197da212c8d47f881499c2bbec9cdf013aee754159a0e1856f49861

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