Malicious PDF — malware analysis report

Static analysis result for SHA-256 62c33e9df27f3910…

MALICIOUS

PDF

48.6 KB Created: 2020-08-09 01:50:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e76c4b8b9478cfc38d2dbb0f91b91d9a SHA-1: d9ce3020d61869be3f138dab622512d7665ad084 SHA-256: 62c33e9df27f3910510071e03dcbc2d1485327988a49ef9001d0d846b235e3ec
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains numerous links, many of which point to a redirector service designed to obscure the final destination. The presence of a 'download button' lure and the ML classifier's high confidence score indicate a malicious intent to trick users into downloading potentially harmful files. The document body, though heavily obfuscated, contains URLs that are part of a link farm, suggesting a phishing or malware distribution scheme.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=dictionary+download+free+pdf In PDF document text
    • http://files.saint-paul-maltese.com/uploads/1/3/0/7/130775435/rufasozapeli_mixex_saxejisitebemes.pdfIn PDF document text
    • http://xitekorir.klbavarianwaxart.com/uploads/1/3/0/7/130739227/gugak.pdfIn PDF document text
    • http://files.synergisticma.com/uploads/1/3/1/3/131383825/2642393.pdfIn PDF document text
    • http://files.gordenstaxservice.com/uploads/1/3/1/3/131383743/f03d7d.pdfIn PDF document text
    • http://files.vedajess.com/uploads/1/3/0/8/130813108/zagiwum_vukolonepezeje_nugipefubuzowu_pomafonipe.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/1/0435/2868/3672/files/seniv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0951/5425/files/39315529138.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5296/5792/files/63254032317.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5955/2155/files/warcraft_3_patches.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9975/0560/files/reddit_gw_cumslut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3314/0127/files/94192713485.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6393/4109/files/93745957625.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9002/7430/files/el_aprendiz_de_brujo_grimorio_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1965/5579/files/56538567720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9739/0244/files/3509154817.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4172/6370/files/21257489705.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3258/2056/files/pofisiwexetarorezer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8131/0114/files/regurir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2636/6111/files/83364821695.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1403/6376/files/23878825090.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
🗂 Part of campaign: mikesbrass.com 3 samples

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E68 5164 bytes
SHA-256: 022bf45350433cc5929de8106d74dae5e8aaa1dd0d1e65f27d89cc89643fdda2
font_01_sfnt_off00007026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7026 4872 bytes
SHA-256: 29377ee47891eb3508e55e70d91a25bc9b2c8e878e2a9688fbc888a97a27e54b
font_02_sfnt_off00007d94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D94 10104 bytes
SHA-256: a376f47ef00a8c814dcce856c32853cfc6c9357309099d05cfd36e32508068cb
font_03_sfnt_off0000a049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA049 16036 bytes
SHA-256: 9559dd1bd908241551916101fda3d445a26f5c4b506a1423f23393456f9d5940

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