Malicious PDF — malware analysis report

Static analysis result for SHA-256 131ebd786d704f1f…

MALICIOUS

PDF

39.1 KB Created: 2020-08-28 02:51:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 23afef8b859ffcbb77cefdac5ff95287 SHA-1: 99b5c99ca736ed37c3a9a75138a95dead0001533 SHA-256: 131ebd786d704f1f36e75d73c87eeb399a4c8dcd3c50d2dd8c060897fd8b4195
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector disguised as a manual for 'farming simulator 17', aiming to trick users into visiting a malicious URL. The ML classifier strongly indicates maliciousness, and the embedded URLs point to known redirector infrastructure. No scripts were extracted, but the document structure and embedded links are indicative of a phishing lure.

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.cc/pify?keyword=farming+simulator+17+manual+fast+forward In PDF document text
    • http://files.seamstobedone.com/uploads/1/3/1/6/131606431/690938.pdfIn PDF document text
    • http://files.thelonewolfdojo.com/uploads/1/3/0/8/130874431/e0075d04397963.pdfIn PDF document text
    • http://files.semillasdeamor.org/uploads/1/3/2/6/132681855/b5347e0abbdd3a4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/76410179135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5366/1858/files/jenga_drinking_game_diy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/3737/1037/files/definition_of_bank_marketing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4999/2860/files/loritozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3945/6423/files/40236978686.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2518/5442/files/read_fullmetal_alchemist_mangahere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/union_budget_2020_download_gradeup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2513/6792/files/fazavizejamizojudu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6366/5062/files/fipokunaxesudonu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/4752/9117/files/annotated_bibliography_sample_mla.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 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004daa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DAA 5168 bytes
SHA-256: 8a4b6d928ad2988b2dba8ab75ddab11a7c29c55d930c2a84b02155cdab70e374
font_01_sfnt_off00005f39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F39 10060 bytes
SHA-256: 60c5c2c3888bece420828f41d2eee3428746cd0fcaf8e61c1f0cedb541d2459b
font_02_sfnt_off000081b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81B6 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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