Malicious PDF — malware analysis report

Static analysis result for SHA-256 864c706032f2f927…

MALICIOUS

PDF

45.6 KB Created: 2020-08-26 00:59:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b0438f42f567fdc5e69321ac07d0313a SHA-1: 05df4967b84fb3c8a2230bf5f379d7b013b56c98 SHA-256: 864c706032f2f9272ad374fb8e8d392a5eba6e6216dc3a8f60c331e9ca6ea43c
194 Risk Score

Malware Insights

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

The PDF contains a lure for 'Stardew Valley bundle guide' which redirects to a malicious URL, identified by heuristics as a redirector and SEO link farm. The ML classifier strongly indicates maliciousness. While no scripts were extracted, the embedded links and the nature of the lure suggest a phishing or scam attempt designed to lead the user to malicious infrastructure.

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=stardew+valley+bundle+guide In PDF document text
    • http://wamota.babbiemuseum.org/uploads/1/3/1/6/131606027/siwubefukumul_tamukigadasotej_fotun_pagizaworu.pdfIn PDF document text
    • http://miladewa.musicandpictures.com/uploads/1/3/1/6/131636761/zadimemigu-zufen.pdfIn PDF document text
    • http://gewuwok.raniyoung.com/uploads/1/3/1/1/131164312/fufuriputegiz-wejawuxidaki-resaseref-sukojo.pdfIn PDF document text
    • http://tezobalu.ukuleleclub.org.uk/uploads/1/3/0/8/130874038/6061553.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/1/0464/9022/2744/files/science_reports_journal_impact_factor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/2333704084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/signing_naturally_student_workbook_level_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0607/4780/files/57438015362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/crop_rotation_principles_and_advantages.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2378/4360/files/24946903180.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0561/6026/files/63307596744.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9579/3571/files/subnautica_console_commands_ps4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1496/3868/files/sevijuradazodibirabuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3010/8581/files/23898343130.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7315/8806/files/49736698347.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/4303/2983/files/best_app_reader_ipad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1047/3633/files/limagezigoxafip.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 2

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_off0000753d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x753D 5312 bytes
SHA-256: 53574c64d772771b09f2724d28dd417e98f1b8f45f885df143f083d98ed845d4
font_01_sfnt_off00008771.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8771 10064 bytes
SHA-256: 771699fc456825d66567b585ccdbd9cdedbfe1d4ee01666e53a00242de10a7d4

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