Malicious PDF — malware analysis report

Static analysis result for SHA-256 6613f2752a8b5bbe…

MALICIOUS

PDF

54.3 KB Created: 2020-03-22 12:22:11 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-09
MD5: d1869692e90797f2b605a83825fc29dc SHA-1: 3884bd96b0ad0e57861efdcc84a570d08ba6f1ee SHA-256: 6613f2752a8b5bbe07ed2a9312bc3838d54a6bf3bb8b4a528a18218d728fa55b
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The PDF document contains a large number of external links to other PDF files hosted across numerous domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • 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://assortedartistries.net/uploads/1/3/0/8/130874156/130874156.html#sistema+locomotor+humano+y+sus+partes PDF link annotation
    • http://nvholidaybazaar.com/uploads/1/3/0/4/130483248/2899102.pdfIn PDF document text
    • http://franchisepro.com.au/uploads/1/3/0/6/130621335/mupowi.pdfIn PDF document text
    • http://247cardetailing.com/uploads/1/3/0/4/130483067/disiw.pdfIn PDF document text
    • http://istaripictures.com/uploads/1/3/0/5/130589057/fedote.pdfIn PDF document text
    • http://trisetfitness.com/uploads/1/3/0/4/130435873/d82d607df7f.pdfIn PDF document text
    • http://campsierrastars.com/uploads/1/3/0/6/130620625/3865461.pdfIn PDF document text
    • http://gadgets2go.org/uploads/1/3/0/8/130814402/kivaruliz_gidutopipi.pdfIn PDF document text
    • http://amatowoodcrafts.com/uploads/1/3/0/3/130313117/7889115.pdfIn PDF document text
    • http://tryshashby-rolls.com/uploads/1/3/0/7/130776692/gorukeve_kilutigupa.pdfIn PDF document text
    • http://restaurantcat.com/uploads/1/3/0/7/130775432/mutijomoxefukole.pdfIn PDF document text
    • http://aliahjan.co.nz/uploads/1/3/0/5/130550768/xupuzebuwoxu.pdfIn PDF document text
    • http://billionaireamerican.com/uploads/1/3/0/7/130740164/501f86ac7afa291.pdfIn PDF document text
    • http://www.dmfw223.com/uploads/1/3/0/5/130545895/9d0ba77d9.pdfIn PDF document text
    • http://designedfx.com/uploads/1/3/0/5/130590436/94b81eee594.pdfIn PDF document text
    • http://www.busybeesoapery.com/uploads/1/3/0/5/130590588/nabonetula.pdfIn PDF document text
    • http://argylecultureeyewear.com/uploads/1/3/0/3/130313056/wijedobag.pdfIn PDF document text
    • http://loninkprojects.nl/uploads/1/3/0/3/130323208/5283903.pdfIn PDF document text
    • http://www.nana-ps-pearls.com/uploads/1/3/0/6/130621061/joxifor.pdfIn PDF document text
    • http://melaniechartier.com/uploads/1/3/1/0/131069870/fupadiravosinuno.pdfIn PDF document text
    • http://jonesii.xyz/uploads/1/3/0/2/130273987/wiwesexipul.pdfIn PDF document text
    • http://financialaiduniversities.com/uploads/1/3/0/6/130639703/75dabdac47cf.pdfIn PDF document text
    • http://paperbirchyoga.com/uploads/1/3/0/5/130590356/61d5dfcd93c6.pdfIn PDF document text
    • http://www.gnosventure.com/uploads/1/3/0/6/130604295/zoterifomojuwupusiv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008b14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B14 8820 bytes
SHA-256: 4cb033503435d541439aa70c581f93dcd11d8680410e7145c052f5b006a14069
font_01_sfnt_off0000aabc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAABC 2652 bytes
SHA-256: e91619dfd4c72a85464d95ef1ba4e67df13020651c42071bafbe521a61d9f7fc
font_02_sfnt_off0000b423.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB423 16036 bytes
SHA-256: 779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63

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