Malicious PDF — malware analysis report

Static analysis result for SHA-256 f855ca6e073a0f23…

MALICIOUS

PDF

44.2 KB Created: 2020-08-16 22:47:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2319cb7d3077b0402edc6a095f2f870c SHA-1: 78a18bc2bf2c8f1daba464397658534c2189126d SHA-256: f855ca6e073a0f23cb773726354c37f65785bc1ff5f56aae55b7a7d42434b706
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The embedded URL 'https://ttraff.cc/pify?keyword=curse+of+la+llorona+parents+guide' is the primary indicator of malicious intent, likely serving as a lure for phishing or malware distribution. The ML classifier also strongly indicated maliciousness.

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=curse+of+la+llorona+parents+guide In PDF document text
    • http://files.andrewdosshistory.com/uploads/1/3/2/6/132682640/nesiviwetax.pdfIn PDF document text
    • http://files.superiorwomenexpedition.com/uploads/1/3/1/4/131453982/jinujeka_sivegi_dugijuzuvegone_lobow.pdfIn PDF document text
    • http://kabefami.jameswestdavidson.com/uploads/1/3/1/8/131871991/lolunemozanoguxo.pdfIn PDF document text
    • http://files.miiaesthetix.com/uploads/1/3/1/4/131482952/7373f.pdfIn PDF document text
    • http://files.wholesalewarehouse.ca/uploads/1/3/0/7/130739593/3833964.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/1/0444/2708/3943/files/46971798303.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9739/1261/files/matplotlib_3d_scatter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45397061855.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2596/4949/files/definition_of_strategic_management.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8463/4530/files/75174596773.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4896/7061/files/47050577674.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5842/1142/files/evanescence_bring_me_to_life_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8918/3398/files/6118590460.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6239/4008/files/king_corpsman_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5665/9621/files/29037900912.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3891/4213/files/sociologie_des_organisations_cours.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0383/8615/files/apush_chapter_23.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 7

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_off00006f1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F1C 5112 bytes
SHA-256: c58983214b2c45a523bede0c21d565c02043b7d86e72d5530553a0d1fbb2c7e7
font_01_sfnt_off00008090.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8090 10248 bytes
SHA-256: d278840eb82f53367da06c60a65bde1681818d15595a1f7c3a6e9f035fa0489d

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