Malicious PDF — malware analysis report

Static analysis result for SHA-256 393697d839ad61d4…

MALICIOUS

PDF

41.9 KB Created: 2020-08-14 05:39:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9ccc99c25a60b8a2bd059c7a8c48d7d0 SHA-1: acdfc99a710cecd1633447a8bac13070c33b1e08 SHA-256: 393697d839ad61d4ed3a5534b3e5865585baa49a408b969ecc769d9d5b9638a9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=tencent+game+buddy+install+apk'. Additionally, it features a PDF link farm with numerous external links, many hosted on Shopify, suggesting an attempt to manipulate search engine results or distribute content. The ML classifier also strongly indicated maliciousness. The primary malicious URL is a redirector likely used to funnel users to a download or phishing page.

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=tencent+game+buddy+install+apk In PDF document text
    • http://lilalum.fundamentallysoundbasketball.net/uploads/1/3/0/7/130775643/boguremomovumezi.pdfIn PDF document text
    • http://fibapi.unitedworkerscongress.org/uploads/1/3/1/4/131407164/6971694.pdfIn PDF document text
    • http://files.thehonestcatholic.com/uploads/1/3/0/8/130873921/3064113.pdfIn PDF document text
    • http://files.christophervonspitzer.com/uploads/1/3/0/7/130739155/6994799.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/1/0434/4512/5281/files/2011_ford_escape_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1438/8888/files/tutorial_guide_to_autocad_2016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9437/6599/files/daft_punk_discovery_zip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2174/4803/files/pevul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9350/8771/files/81431494260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2955/2552/files/bhagavad_gita_online_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/multivariable_calculus_lecture_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2171/4079/files/99847643446.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/91146339154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3332/7776/files/mosoliwisak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5783/1326/files/22270240033.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/kosemizeferepanegopan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1245/4560/files/36150357210.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 8

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_off000065bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65BF 5552 bytes
SHA-256: 23b04a1f9c4f684f20ebbbe05eb5762768db7782c824860f0c19f68986b40b5a
font_01_sfnt_off00007892.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7892 10016 bytes
SHA-256: 4aff255aef91c81ccc72b2221aa886c5d8d737f571bf7b3347188f6c6fe0f542

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