Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f7723c58e4671e9…

MALICIOUS

PDF

52.5 KB Created: 2020-07-31 23:39:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6f938236e94022f76b3c8dc7975f867b SHA-1: 249615eaea2072dad81eaea5e153b4e1e1b652b0 SHA-256: 7f7723c58e4671e99d468db5a2f8eea74ecac0826e5460a14f871d93de68bfe9
294 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

The PDF contains numerous embedded links, many pointing to a redirector service, and explicitly asks the user to recover secrets or private keys. The document body, though obfuscated, contains URLs that are also present in the heuristics, indicating a lure to a malicious site. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion of a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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=upload+to+github+from+terminal In PDF document text
    • http://files.theweddingcentrenuneaton.co.uk/uploads/1/3/1/6/131606758/19bfa5edfcf2.pdfIn PDF document text
    • http://files.youthleaderhubs.com/uploads/1/3/0/7/130775598/selonojojob_powan.pdfIn PDF document text
    • http://files.lancasterthundertix.com/uploads/1/3/1/4/131407406/57d00c3.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/1/0437/8502/7746/files/pafebirujaxejoxowotovu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8087/4139/files/56452938263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2353/2195/files/kowes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40035930655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9643/8936/files/98695890423.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5144/1562/files/17182487127.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4580/6503/files/54546309418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9515/4070/files/juwevusaron.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9524/2392/files/jikuzetadekomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2045/1997/files/18869575725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8093/1733/files/29826797886.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2068/1369/files/89211043099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7229/8918/files/93583993991.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/semigo.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

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_off000064ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64EA 5408 bytes
SHA-256: 07800b5ca18339856a4a56f8d46b9ebec54289af24312eae4e51934294175e1e
font_01_sfnt_off0000771b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x771B 3120 bytes
SHA-256: 6aa82955e117d44a43ee3f00d38721e5a856e0beaa5e9be21e4b15ad85f5f80c
font_02_sfnt_off000083a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83A0 13684 bytes
SHA-256: 45ebed49cd4cc48b195192c3f823e6fc556e816b69df7ff0b85c95412ee6def8
font_03_sfnt_off0000afac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFAC 16084 bytes
SHA-256: 62a91fb32920f6e8cc04f0b1e834142448e73e4a31e16512d2a7fd751ba0d286

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