Malicious PDF — malware analysis report

Static analysis result for SHA-256 03fb81abaf21ab80…

MALICIOUS

PDF

47.3 KB Created: 2020-08-17 09:30:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a2a072d55a72fe821a9a555e248d8416 SHA-1: e936aa27531eb998fe1720f679e91491fa39dd83 SHA-256: 03fb81abaf21ab80c527f29c7d5978cdd28c26153077cf80d6793ae7683ab416
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing indicating it redirects to known malicious infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be a lure for financial information. The ML classifier strongly indicates maliciousness, supporting the attack pattern of using a seemingly legitimate document to redirect users to a malicious site.

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.com/pify?keyword=spdr+500+etf+fact+sheet In PDF document text
    • http://zelexerob.med2u.com/uploads/1/3/1/3/131398455/xaxote-liraramulemiv.pdfIn PDF document text
    • http://files.adarksouvenir.com/uploads/1/3/0/7/130775102/xonasovolejanuzed.pdfIn PDF document text
    • http://files.risingravenband.com/uploads/1/3/1/3/131384018/buvab.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/1/0429/7415/0809/files/14815809362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7001/4111/files/albinismo_oculocutaneo_tipo_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7007/8617/files/split_by_page_range.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0219/1269/files/pazupuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3033/0019/files/ritmos_de_aprendizaje_segun_autores.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/bagadiya_ke_dere_mein_ragni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0917/7762/files/kofimujikekomatofuzajox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5024/3995/files/22521086768.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3277/2757/files/juvesez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/demesudixagivok.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 8

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_off0000799d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x799D 5580 bytes
SHA-256: ef6c99bd9187f4e517b32fd204de433d15cdba34e77c96c9c355e82802806eea
font_01_sfnt_off00008c96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C96 10572 bytes
SHA-256: 73b4c561790eae6a21be97cd6741ce1587016b72ac5816a4dbf24bf27f2cf915

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