Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b3623562ebcaee2…

MALICIOUS

PDF

43.6 KB Created: 2020-09-11 19:38:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 011a8373692dc8f53fb71e17d7cbacd7 SHA-1: bbfc63626f9e19219aa6d3efeb4ba4dec11690bb SHA-256: 4b3623562ebcaee2fcb1e5a5ac38f9e49d5804deb964d49b51c93fdc477584cb
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, identified as a link farm, with a primary malicious redirector URL. The document body, though heavily obfuscated, contains the string 'Instagram story template after effects free' and the malicious URL 'https://ttraff.link/wix?keyword=instagram+story+template+after+effects+free', suggesting a lure for free content. The ML classifier also flagged this PDF with high confidence.

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.link/wix?keyword=instagram+story+template+after+effects+free In PDF document text
    • http://teduga.b-dogdesign.nl/uploads/1/3/1/4/131406535/6897724.pdfIn PDF document text
    • http://xazeduk.rsgymnastics.org/uploads/1/3/0/7/130776611/pijodeta.pdfIn PDF document text
    • http://files.deborahshulmanmsw.com/uploads/1/3/0/7/130775023/ximepevotajowu-suwopegure-kigupul-rovizumesewadu.pdfIn PDF document text
    • http://files.peteandlauren.com/uploads/1/3/1/0/131070420/mipavaru-kujibutik.pdfIn PDF document text
    • http://files.credorecoveryministry.org/uploads/1/3/1/1/131164204/vitefadimivu.pdfIn PDF document text
    • http://nalaki.jacksonchapelumc.org/uploads/1/3/2/7/132712116/daraxeladaloja.pdfIn PDF document text
    • http://zofot.plowbreakfarm.com/uploads/1/3/0/7/130776485/9564956.pdfIn PDF document text
    • http://denuzarag.apriloliviaroskos.com/uploads/1/3/1/6/131606968/filuvuge.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/5cd33b_53523769744d416ea9f0149dc1df6790.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/05900a_0472565f5a04433992bc71c0f685602a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b7306e_859bd5b3281d41708766616d0d09e347.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/70a38d_90fc8520d33746a4baaaaf1c113072e2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/eeb7bd_fddde43c3f2b4f25a5b14acdeb8ddf05.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/eaf48f_3ce8d4c8b3ff44fe91fe5f0d5dd78d06.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a18aa6_87b7065912c44519a78df65340d02998.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/278743_3b92beb8239d41a892de2582b3b3ac2a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/2f8cea_f6879b34337241488c9409ca4056cbcd.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_off00006baf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BAF 5376 bytes
SHA-256: bbc77f28fb3e156008daff7d13a2735a1f76a63e155675edbe3591497282f4ce
font_01_sfnt_off00007df3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DF3 10372 bytes
SHA-256: eeca14f29d667a5d3af393a7d5cf83c5f0e0eea30f6b9a0914489cce10b23375

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