Malicious PDF — malware analysis report

Static analysis result for SHA-256 caac6718aacec37c…

MALICIOUS

PDF

47.4 KB Created: 2020-08-21 03:48:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8985df3c8dfc630ff42589892c6c6fb8 SHA-1: 3c685562d0187673fbae6210a6a4bbb54fa2f12b SHA-256: caac6718aacec37c79b39980b178aee9efb8af564eb487db3fb54322a45bd3a3
194 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious domain, disguised as educational material. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates the primary intent is to redirect the user to a harmful site. The PDF_SEO_LINK_FARM heuristic suggests a large number of outbound links, many of which point to potentially malicious or unwanted content, further supporting the malicious redirection pattern. The document body contains the lure text and the malicious URL.

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.ru/pify?keyword=guided+reading+activity+6-+1+answers In PDF document text
    • http://files.jdliquidprinting.com/uploads/1/3/1/4/131437283/jasaj-telinosew-mameramuj.pdfIn PDF document text
    • http://files.pfmorgans.com/uploads/1/3/1/6/131606453/118770.pdfIn PDF document text
    • http://soburaja.jodynixmusic.com/uploads/1/3/0/8/130814995/8857830.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/1/0438/1710/7616/files/50360458203.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7496/8997/files/vanuwowoledekawosigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/5803131976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5481/6665/files/phenylalanine_deaminase_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/2096/3227/files/jenegiroxajezonoti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6594/9862/files/software_tester_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5238/3904/files/lidelofakodutelira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1888/7073/files/7727964055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8289/8840/files/bearing_arrangement_design.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7935/1968/files/88188993724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5504/7068/files/gamasakab.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006422.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6422 5600 bytes
SHA-256: 3bc19af784fbf6b68a879af5e5960acb4ee07078de8d8bad9273a9f3687b9abc
font_01_sfnt_off00007763.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7763 10144 bytes
SHA-256: 156430517cec1da659d0cd7b1b6efd192855e6d81591bb58187ff93cb54a4c30
font_02_sfnt_off00009a22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A22 16092 bytes
SHA-256: c9557d91917e40dbb2ce09b7ef560a04a9a832ffe2ebcac6b50408a58351272e

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