Malicious PDF — malware analysis report

Static analysis result for SHA-256 3424df9c313444f9…

MALICIOUS

PDF

43.7 KB Created: 2020-08-20 10:47:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f5231126d478b44d5a2f01dc8f0c0e88 SHA-1: 0edd6f17e43992e5d8d30532de31c15c14ac3b91 SHA-256: 3424df9c313444f92fc8ba6c31acfa94932b134c52ea5873a0a1f166fa1e3883
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.com) that is known to host malicious content. The document body, though heavily obfuscated, contains text related to textbook answers and URLs that appear to be part of an SEO link farm designed to lure users. The presence of these links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful websites.

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=algebra+2+textbook+answers+mcgraw+hill In PDF document text
    • http://bavebup.lakecountyiltransition.com/uploads/1/3/1/4/131438539/9653562.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/1/0431/6971/0242/files/best_markup_app_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/1407/0945/files/factory_mutual_approval_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9676/8665/files/60351386676.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8660/1639/files/49317229464.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/66826092524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0202/5368/files/beyond_compare_softonic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/datofugilasififuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3192/0794/files/human_body_organs_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5557/8273/files/ideological_state_apparatuses_are_nonviolent_social_formations.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_off000069bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69BC 5696 bytes
SHA-256: d1e8ea9eccb28ee455eb4d2e7bdebae9914846cd41dbc8780480de6125d57e16
font_01_sfnt_off00007d13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D13 10860 bytes
SHA-256: c07d1c45790876fa0e8bf194398f32398526bee5c3a5785798b1c52276db909a

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