Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c95e4fe5ef9ca39…

MALICIOUS

PDF

47.5 KB Created: 2020-08-16 21:18:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c4ad72f56e19d6cf32ce0629088390f1 SHA-1: c60de00516197c2ed4b084a9a4fca01aed6e0597 SHA-256: 1c95e4fe5ef9ca395f08595cff179ff1378186903de62bb0bdc217eab2c8dea4
194 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics indicating malicious redirector links and a large link farm. The document body contains a URL that leads to a redirector, which in turn likely points to a malicious payload or phishing page. The ML classifier also strongly indicated maliciousness. No scripts were extracted, limiting the analysis of the exact payload.

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=android+emulator+localhost+api In PDF document text
    • http://jidijaxu.lifesmysticaljourney.com/uploads/1/3/0/9/130969352/notixuzev.pdfIn PDF document text
    • http://files.fotofringelondon.com/uploads/1/3/1/4/131438509/5e3153f0.pdfIn PDF document text
    • https://jexusmanager.comIIn 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/1/0437/9725/0210/files/predator_228_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6626/9600/files/gitalobufiwaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5219/4202/files/chemistry_notes_class_12_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3614/5814/files/rifesefubulumomotexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5531/7149/files/63747446487.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vukabisozudetilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/86960218296.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3446/0828/files/xovege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86662201832.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7151/0430/files/segon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7663/2220/files/swimming_pool_maintenance_checklist.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1737/1801/files/66064876923.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5920/8604/files/99527292196.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 2

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_off000072ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72EF 5300 bytes
SHA-256: db5aecf00ac7f8a8125e75968cda23d1dbbd0aebfdc4ee43074d468a535170d7
font_01_sfnt_off000084be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84BE 13996 bytes
SHA-256: a4e90531252224c126d170f12cabe50bd9a0deb69ad1626ac3985ae64acc0524

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