Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0392aa51f66ad3c…

MALICIOUS

PDF

44.7 KB Created: 2020-03-28 10:53:30 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-07
MD5: 056031fe8cec43edf7fa1a60bfae2e5e SHA-1: 4ec940250bff5db49a6fc5ac20a042ae5af841ca SHA-256: f0392aa51f66ad3c29610c143d687b4d7133ebfe13a7a8827f82d806c59d1e6c
136 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the 'PDF_SEO_LINK_FARM' heuristic. These links point to various domains, suggesting a link farm or a method to distribute malicious content across multiple sites. The ML classifier also strongly indicated maliciousness. No scripts were extracted, and the document body contained only metadata and garbled text, providing no further clues about the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://bemscanning.com/uploads/1/3/0/6/130604812/130604812.html#espacio+muestral+del+lanzamiento+de+3+monedas PDF link annotation
    • http://digitalsqueak.com/uploads/1/3/0/8/130873973/pumokasome.pdfIn PDF document text
    • http://redrockmedicine.com/uploads/1/3/0/5/130551116/pusesepizebivojikula.pdfIn PDF document text
    • http://autodiscover.dustibonge.org/uploads/1/3/0/6/130604036/60d41d6ea4eb.pdfIn PDF document text
    • http://www.waterfordepiclocations.com/uploads/1/3/0/5/130539427/jukukuzoxumowepa.pdfIn PDF document text
    • http://wellingtonyogawithpenina.com/uploads/1/3/0/5/130588346/e1c8e26d6da02d.pdfIn PDF document text
    • http://mta-sts.mail.cpliofindiana.org/uploads/1/3/0/6/130621060/595978.pdfIn PDF document text
    • http://italocanadianclubofforterieinc.com/uploads/1/3/1/3/131380120/jaxosunazaku.pdfIn PDF document text
    • http://goingcoastalobx.com/uploads/1/3/0/4/130478975/3796193.pdfIn PDF document text
    • http://cartermountainphoto.com/uploads/1/3/0/5/130539046/ridiwowirorisimegan.pdfIn PDF document text
    • http://wearexg.com/uploads/1/3/0/4/130489933/f530368961.pdfIn PDF document text
    • http://putothersfirst.net/uploads/1/3/0/5/130551137/vilenofowol.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off00006f6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6F 8464 bytes
SHA-256: 736f111e2fe1fda03ac55c6e7a5d15f431952d6b1e9fc5f15dfc4ccb0c471110
font_01_sfnt_off00008e94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E94 16036 bytes
SHA-256: 779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63

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