Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3972d4b3a398906…

MALICIOUS

PDF

46.3 KB Created: 2020-08-27 21:32:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2f9e6c716110b3537586d4862761047f SHA-1: 55585da029d0e0eb32077d01328bcce7e3193986 SHA-256: c3972d4b3a398906247a0d535d43134fa6f87b58e2663269d1454e33cf26354d
194 Risk Score

Malware Insights

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

The PDF contains a link to a redirector service, which is a common technique for delivering malicious payloads. The document body, though heavily obfuscated, contains the same redirector URL. The presence of a large number of external PDF links suggests a link farm, likely for SEO manipulation or to host further malicious content. No scripts were extracted from this sample.

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.me/pify?keyword=classic+shadow+priest+guide In PDF document text
    • http://files.epathletichalloffame.org/uploads/1/3/0/8/130874642/jeboreb.pdfIn PDF document text
    • http://files.ryannewtonphotography.co.uk/uploads/1/3/1/4/131452997/megetisowudog.pdfIn PDF document text
    • http://vejojate.rachaelfrankford.com/uploads/1/3/1/6/131637223/4199200.pdfIn PDF document text
    • http://files.desantosmensgrooming.com/uploads/1/3/1/0/131070152/tulobofabig_tekisirumuzirop.pdfIn PDF document text
    • http://files.cowpencreekfarm.com/uploads/1/3/1/8/131856649/wododovotifibo_vajamaxakafu_vifetotimatowi_vakelovij.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/1/0428/1883/0503/files/67588324989.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4977/1430/files/pdf_to_word_programa_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4687/1974/files/14907970193.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5126/0836/files/powerpoint_executive_summary_template_ppt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0213/3653/files/nozarolenoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0203/5351/files/mavifasuve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1582/3772/files/65099920201.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0391/5933/files/10621498145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6653/9673/files/41345768148.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0799/1208/files/tv_guide_minneapolis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0688/6051/files/pixiv_id_82156.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/3479/8238/files/144296500.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 5

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_off00007745.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7745 5332 bytes
SHA-256: 503a3847e24120b91ed166f274d53c232de89c3291e6a470d0391e87da186653
font_01_sfnt_off0000896b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x896B 10120 bytes
SHA-256: 3ff2180aa55c047856afc0c521a76affb213e35a66f3968512f14aee2b056ed7

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