Malicious PDF — malware analysis report

Static analysis result for SHA-256 798e259d7d3df92c…

MALICIOUS

PDF

42.8 KB Created: 2020-08-07 00:58:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d512cb9e19cb6e8e13e27f8c62aa80d3 SHA-1: 0cbd23cd9f4a6a63d6c70f5c6309acc277ac1eb3 SHA-256: 798e259d7d3df92c1a3776add73b547e06df95740cebf99b0bbb5e9bf6432b88
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a redirector to malicious infrastructure. The document body, though corrupted, contains text suggesting a lure related to an 'Oxford picture dictionary'. The presence of a malicious redirector URL and a high ML classifier score strongly indicate a malicious intent, likely for phishing or to serve a second-stage payload. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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=oxford+picture+dictionary+english+japanese+pdf In PDF document text
    • http://files.truloft.net/uploads/1/3/2/6/132695258/gavujomamik-birolisi-nivosipilez.pdfIn PDF document text
    • http://files.chatnoirartstudios.com/uploads/1/3/0/8/130814339/1414142.pdfIn PDF document text
    • http://files.omorikuratau.com/uploads/1/3/1/8/131871692/4975945.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/1/0432/1456/9640/files/mititebufosowe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0507/4838/files/faput.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89377355024.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6400/8610/files/11513526099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8241/6281/files/32519412969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8729/7696/files/dimefenotino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/94260126358.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7369/1045/files/botrytis_cinerea_life_cycle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3144/5156/files/38137721123.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9641/6160/files/62240086332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5264/6050/files/english_book_for_class_12_up_board.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/20234897386.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0158/5570/files/pamevuxogoginipejisuxere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7207/0556/files/vixabelolimatexasod.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
🗂 Part of campaign: alyssavegerphotography.com 4 samples

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_off000066a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66A9 5688 bytes
SHA-256: 5010f6c2058d75dae95df159d1480eed9148411db4f8925401901f6384c3320a
font_01_sfnt_off00007a0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A0D 10468 bytes
SHA-256: 91195cc07394b26450ab40a43f457aac13fe2797f4e932df7eb3ab97cbb1d0fc

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