Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c9f22da4f479781…

MALICIOUS

PDF

48.9 KB Created: 2020-08-16 16:55:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9ceab66f618bf3902cdc08eaf6d82405 SHA-1: cddf0aaebeb276b342827bda94e15f7d8f1ba263 SHA-256: 3c9f22da4f479781c2b85339095b6c33415e476ccaf9a9ec40800508d31a7d66
202 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. It also exhibits characteristics of a link farm, with numerous external PDF links, as flagged by PDF_SEO_LINK_FARM. The document body, though partially corrupted, contains text related to downloading an emulator and includes the malicious URL, suggesting a lure to a malicious site. The presence of a visual download button further supports this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=cara+main+game+emulator+ps2+di+android In PDF document text
    • http://files.aaronyee.com/uploads/1/3/0/9/130969225/vamonitujalal.pdfIn PDF document text
    • http://bipetezo.2linehockeytakedown.com/uploads/1/3/1/4/131437130/2e972ea0694.pdfIn PDF document text
    • http://files.imperialplugs.com/uploads/1/3/0/9/130969312/levefup_wujunulutubatu.pdfIn PDF document text
    • http://files.angelagoodetaylor.com/uploads/1/3/1/4/131407357/robonodirexoterekan.pdfIn PDF document text
    • http://rowowas.savannahpowerwash.com/uploads/1/3/1/6/131606731/6581646.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/1/0437/7945/7175/files/louisiana_medicaid_eligibility_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/0806/0574/files/caracteristicas_de_los_plasticos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3475/4728/files/mudularazameraredetomusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9315/6259/files/87819182406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4267/6648/files/48960312245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0760/5923/files/81517302518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7215/0947/files/sociology_of_law_and_sociological_jurisprudence.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tevedizulav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9886/9653/files/coleoptera_scarabaeidae.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_off0000822f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x822F 5316 bytes
SHA-256: febf3b6fbc6497f6d4c5345f1019e4733864f09751791e504e0a1d41930af8b0
font_01_sfnt_off00009428.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9428 10128 bytes
SHA-256: 9977e0f1dc25e2d7386614abcf4316ba370fdb591977d63b5a87fe4f34c096fa

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