Malicious PDF — malware analysis report

Static analysis result for SHA-256 f37c8b0a30b1c7c0…

MALICIOUS

PDF

44.5 KB Created: 2020-08-19 07:18:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e055c441ae8ff0d9bde5327abb4677d0 SHA-1: 76b27a55b004fe0ed0ab2ea7e9feae0f1055bf51 SHA-256: f37c8b0a30b1c7c0c1d66575c65b2254558c1aa74579b2e4e4330bea7085e490
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded URLs, with one identified as a malicious redirector. The ML classifier strongly flagged this PDF as malicious. The presence of a link farm and a malicious redirector suggests the document's primary purpose is to lure users to malicious sites, likely for phishing or malware delivery. No scripts were extracted, limiting the analysis of direct execution capabilities.

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.cc/pify?keyword=ro+idle+poring+mvp+guide In PDF document text
    • http://pepowax.templeemanuellongbeach.com/uploads/1/3/1/8/131857631/9130023.pdfIn PDF document text
    • http://mitivod.homermarinetrades.com/uploads/1/3/1/4/131482975/40319dd40.pdfIn PDF document text
    • http://files.aparnahowlader.com/uploads/1/3/1/4/131411688/zigofavapulewi_gurigeporefef_dafenanakib.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/1/0432/1925/5454/files/john_henry_newman_apologia_pro_vita_sua.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7211/9193/files/tisezewutifagukupab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4551/7469/files/muxatemeganajamadaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5550/4795/files/xivugepumogexuva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dutevitijenunolekegek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4776/4636/files/11360705006.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/reacoes_dos_alcoois.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0924/4317/files/labalivopema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5013/1878/files/virtual_and_augmented_reality_applications_in_manufacturing.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 1

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_off00006978.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6978 4956 bytes
SHA-256: 61199cd823cd3658b765b6fdf1fa853d10b40414f749be7fb26c246fbe102805
font_01_sfnt_off00007a48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A48 13748 bytes
SHA-256: 719de3613b698d8151d4ab4dc2d5a17e2289924e76a88e700d995ebc1ec778f8

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