Malicious PDF — malware analysis report

Static analysis result for SHA-256 12184c4184a10940…

MALICIOUS

PDF

40.6 KB Created: 2020-08-09 04:31:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a1ef48ce2d2ddfd2759d3abda20675b7 SHA-1: 42504540fd71f15ca5531737fe9d109203881229 SHA-256: 12184c4184a109406ce028d7a321bb990042dbb47fc2c7e9e34bde8e18a4a59e
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links, including a link farm and an SEO lure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=subject+and+verb+agreement+quiz+pdf', which is flagged as a malicious redirector. This suggests the PDF is designed to redirect users to malicious content or phishing pages.

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=subject+and+verb+agreement+quiz+pdf In PDF document text
    • http://files.ems6b.com/uploads/1/3/2/7/132740880/9865283.pdfIn PDF document text
    • http://files.amanda-g.net/uploads/1/3/1/4/131437411/zufojolede-xakakik-lareku.pdfIn PDF document text
    • http://files.nanaspizzapr.com/uploads/1/3/2/7/132710565/ditimerogufanev.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/1/0428/0041/4883/files/mitivogepagafabufatisev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6073/1803/files/adobe_photoshop_cs3_tutorials_in_urdu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2736/5031/files/92916955342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0190/3264/files/23373718644.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1842/6267/files/ssc_stenographer_old_paper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5420/2018/files/65222570340.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7170/8065/files/gakerixufuzuzepegowalum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3851/5095/files/84857928836.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8158/1223/files/booker_prize_winner_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1024/4256/files/guzokax.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 5

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_off00005de2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DE2 5820 bytes
SHA-256: 9a6265b81a63b46be4f436783681677acdc68f9499730be4a281b73ce2548154
font_01_sfnt_off000071ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71AE 10484 bytes
SHA-256: 7ee3f9002025ac5125429870f35267c7d8501ae20e898ab166242dfeba1c3b11

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