Malicious PDF — malware analysis report

Static analysis result for SHA-256 23ce2cb9f352bdaf…

MALICIOUS

PDF

112.8 KB Created: 2020-08-06 05:51:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: add1ba6069fdb03c5c9e1256c53e996f SHA-1: 1a61b79f96946ce27c386b383e16ea9544ad57c1 SHA-256: 23ce2cb9f352bdaf5590bc2d6ed04dd126f1a1be025e9a694d49bbcc4c6e56b7
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=narrow+and+broad+meaning+of+education+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many of which are benign Shopify links, but the primary redirector is malicious. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, contains 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.com/pify?keyword=narrow+and+broad+meaning+of+education+pdf In PDF document text
    • http://files.cffu.org/uploads/1/3/2/6/132683111/bazakekukaxatiwi.pdfIn PDF document text
    • http://files.eastmain-salonspa.com/uploads/1/3/0/7/130738765/pasudevizodop.pdfIn PDF document text
    • http://pijes.titansinvite.com/uploads/1/3/2/7/132740405/lexifituviki.pdfIn PDF document text
    • http://files.leggsandmorellc.com/uploads/1/3/2/6/132695200/joxamamalu.pdfIn PDF document text
    • http://files.sweetpeasunshinestudios.com/uploads/1/3/1/3/131383323/xifaxeka.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/1/0430/0419/9075/files/audiovisual_translation_taking_stock.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7353/6161/files/52940068681.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4523/1519/files/video_downloader_ultimate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9237/6741/files/rudira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5488/3231/files/86943559495.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/39858795743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3278/0695/files/sinojofurerawazinemisove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7722/1017/files/1623742756.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5149/9170/files/zaxuludoguvugufolekas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4285/6345/files/notedomozoturilazatagof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9480/2581/files/14505547687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7469/8912/files/zuvejonefojoxajal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1602/8309/files/33141956548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8782/1981/files/real_time_pcr_protocol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1222/6202/files/zipawijutotetozotekijati.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017c4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17C4B 5468 bytes
SHA-256: 0438c6a6cc55af73aa6a7b84266e37c793a199619b512b93ce1070075a1e15f9
font_01_sfnt_off00018ee7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18EE7 10664 bytes
SHA-256: 8d448d0297f4790a2e1d4d5bb9b8a3d870d8018c831244e6bb2a484100efd169