Malicious PDF — malware analysis report

Static analysis result for SHA-256 8204687afc090eba…

MALICIOUS

PDF

44.8 KB Created: 2020-08-23 10:31:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4f594bae228fd6cf756f12a53a192eef SHA-1: 268745d798fe06a814f0f89cf018e545ce62d016 SHA-256: 8204687afc090eba34e3673149da2526362a7e645a51e54c49cb6d99e4ff9fa1
194 Risk Score

Malware Insights

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

The PDF contains a link disguised as a song title, which redirects to a known malicious redirector. This redirector is part of an SEO link farm designed to phish users. The ML classifier strongly indicates maliciousness, and the embedded URL points to a suspicious redirector.

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=my+heart+is+beating+naa+song In PDF document text
    • http://files.santacruztrackclub.com/uploads/1/3/1/6/131606011/ramukikogif_lebiko.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6646/6216/files/64977965451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4042/3592/files/59465413100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6204/2529/files/46821998122.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7673/8462/files/15277628566.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8058/1274/files/zipikugifosipitid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3685/1874/files/budget_spreadsheet_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8665/2316/files/free_newsletter_templates_for_elementary_school.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/smallest_reader_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3305/1814/files/84879934198.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/buwukepenarunowara.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000579f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x579F 4948 bytes
SHA-256: 6e670dc8df50ef55309cb773b810eec71f07ad24fea2f29d11f91d81a4f33cac
font_01_sfnt_off0000686b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x686B 2996 bytes
SHA-256: a301576229b6f05be86f3e3bd404b30d37b70d8e1f24a559a542d316e646e6e3
font_02_sfnt_off000074bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74BF 10368 bytes
SHA-256: 712c900f50d4837784cfaf4f11e0cc12413d00cb230d1dbd10f4ef743a3d26d0
font_03_sfnt_off00009853.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9853 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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