Malicious PDF — malware analysis report

Static analysis result for SHA-256 3db7b6689cabfb56…

MALICIOUS

PDF

42.4 KB Created: 2020-08-24 16:29:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 43390f9b25a38abaf102514aa73310ac SHA-1: 8092cfdc3a2b4d58e925d4dde324e39dd5a19446 SHA-256: 3db7b6689cabfb569f4059f21e8a1267cdc9fe87c744d509de3fbcfcc55111ba
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link to a known malicious redirector, ttraff.cc, disguised as 'nata aptitude test sample papers with answers'. This indicates a phishing or social engineering attempt to direct the user to malicious content. The file also contains a large number of embedded links, many pointing to Shopify, which is characteristic of SEO link farm abuse to improve search engine ranking for malicious content.

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=nata+aptitude+test+sample+papers+with+answers In PDF document text
    • http://files.walleycreeknanaimo.org/uploads/1/3/0/7/130775413/7984327.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/1/0436/4517/3910/files/1159766510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0849/1673/files/24641187772.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9816/7713/files/78220615053.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7096/3350/files/business_intelligence_course_outline.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1126/7990/files/diwukeki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9702/2879/files/adobe_photoshop_7._0_tutorials_in_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4581/3413/files/imitate_their_faith.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/2224/6042/files/bukunmi_audio_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1818/2041/files/86163494041.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1334/0312/files/pdf_splitter_page_range_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8179/3698/files/sujabete.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 4

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_off00006742.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6742 5260 bytes
SHA-256: ff3801239e74e658ed4ced8f2445cf943609851264ba6174c7231104c9c6318d
font_01_sfnt_off0000790b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x790B 10480 bytes
SHA-256: e99ae4e8a3b1e935a6345067b3818e7186089cd0d554464555b0403f49a97a67

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