Malicious PDF — malware analysis report

Static analysis result for SHA-256 42c79d26f093976f…

MALICIOUS

PDF

40.0 KB Created: 2020-08-09 11:52:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fca8a1254f8db1fdc49012b1e9faa024 SHA-1: 38ad2a842dd668e5d4138f18be03d58d2f506de7 SHA-256: 42c79d26f093976f444490d2e6ac806b64275d77f030697c19dd17f680d8417a
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, disguised as a PDF to JPG converter. The document body and heuristics indicate a lure to click this link, which likely leads to further malicious content. The presence of numerous external PDF links suggests a link farm used for SEO poisoning to increase visibility of the malicious lure.

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.cc/pify?keyword=pdf+file+to+jpg+image+converter+online In PDF document text
    • http://files.vn.seameocelll.org/uploads/1/3/1/0/131070212/a44622c38.pdfIn PDF document text
    • http://files.chandalinchamplin.net/uploads/1/3/0/8/130874416/1643125.pdfIn PDF document text
    • http://files.bnhlivestock.ca/uploads/1/3/1/0/131070767/ab47c99adf4.pdfIn PDF document text
    • http://files.discovery-wellness.com/uploads/1/3/0/9/130969966/5160099.pdfIn PDF document text
    • http://mogov.katieluka.pl/uploads/1/3/1/6/131637649/1654217.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/1/0430/0016/8597/files/fukifusoxupedizumegef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4926/8886/files/vejav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2796/9686/files/kiwinikimapoxuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3735/1326/files/45722537898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/ludaneditenuzasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6489/3344/files/guvivowuginigeguna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5912/5160/files/98217496172.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6438/4927/files/8732982754.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0047/0438/files/tipos_de_organizaciones_sociales_en_mexico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8606/7352/files/34953985549.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8300/5093/files/54969973824.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 3

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_off00005d7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D7E 5432 bytes
SHA-256: ef8fe35b9fce9cfc90c86b9e4a0fb659a9758d5a782b8b36c009257a641050ea
font_01_sfnt_off00006ffb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FFB 10552 bytes
SHA-256: 8498e8f041c2763e38db6d601b0516ececc0afe3e80bdbc63d5f730b93a7ce6b

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