Malicious PDF — malware analysis report

Static analysis result for SHA-256 defffb76cc7381ae…

MALICIOUS

PDF

48.2 KB Created: 2020-08-25 08:40:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 92ef0f87db1f04c5f47ddd4dc39a8d46 SHA-1: a7f74c3a7bfa554b72b06dc57fcd4d5bfb45328a SHA-256: defffb76cc7381aecfc9f04438fbd18470e9a409cbbdc3aa7584e7c86ea2b779
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to scholarship interviews and the malicious URL. The primary attack pattern involves luring the user to click on a malicious link, likely leading to further compromise. The PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics strongly indicate this malicious intent.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.ru/pify?keyword=chevening+scholarship+interview+questions+and+answers+pdf In PDF document text
    • http://files.roxanaramos.com/uploads/1/3/2/6/132695280/048e5a1e57.pdfIn PDF document text
    • http://files.northwindswineconsulting.com/uploads/1/3/2/8/132814096/biviv.pdfIn PDF document text
    • http://files.farmacybotanical.com/uploads/1/3/2/3/132302973/xutitogesafa-lixoreriberexik-larowuwonubola.pdfIn PDF document text
    • http://wujob.msbui.com/uploads/1/3/1/4/131453416/481757.pdfIn PDF document text
    • http://files.advancelabordaypicnic.org/uploads/1/3/1/8/131857465/3568262.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/1/0430/1769/9477/files/1232372681.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3332/9815/files/kuvubopalu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5225/2829/files/autocad_3d_max.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0096/1947/files/73719041903.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9340/8409/files/65534340000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9270/3384/files/ansi_c_book_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/2127/5033/files/best_calling_application_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4896/8100/files/wuvezovixusogenusitiru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1103/0683/files/35707852001.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0065/1158/files/angielski_w_tumaczeniach_sytuacje_chomikuj.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_off00007e1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E1A 5600 bytes
SHA-256: c2ada60893860f0e491c955e3c99d63ed99f1c154dd450eacd9e09d948975f5b
font_01_sfnt_off0000912c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x912C 10120 bytes
SHA-256: 6f39c4c7cf3fdfb85f02f974563594a4cc15cf770ab9de671bd35489135481be

Open this report in the interactive analyzer, or submit your own file for analysis.