Malicious PDF — malware analysis report

Static analysis result for SHA-256 b501b7f2f17fbd8f…

MALICIOUS

PDF

61.1 KB Created: 2020-03-13 06:15:28 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-08
MD5: 6d1c7001b9b55c3134874e96bff49f93 SHA-1: e8fc824a36d75a2750e127c8e24b0edf9768ca51 SHA-256: b501b7f2f17fbd8f1f4c9dc06f3db0d10c442dca25b90f5fcfbea899a174cd7e
96 Risk Score

Malware Insights

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

The PDF file contains a large number of external links pointing to various domains, indicative of a link farm or SEO abuse tactic. The document body, though partially corrupted, contains references to 'Timken taper roller bearing interchange' and the wkhtmltopdf tool, suggesting a lure document. The primary heuristic identified a mass external PDF link farm, with the dominant host being www.comportamiento.club. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://927cu.salon225.com/uploads/1/3/0/6/130604583/130604583.html#timken+taper+roller+bearing+interchange PDF link annotation
    • http://www.comportamiento.club/uploads/1/3/0/5/130590351/tibufazija-junusi-kiradopoxa-kuneweben.pdfIn PDF document text
    • http://spoondriftboutiquellc.com/uploads/1/3/0/7/130776485/83f24bc.pdfIn PDF document text
    • http://metroheatingandair.com/uploads/1/3/0/5/130589348/zozizojobuvosuguzeke.pdfIn PDF document text
    • http://whitefishmontanarealestate.org/uploads/1/3/0/8/130813855/d6d1f7340.pdfIn PDF document text
    • http://behavinglively.org/uploads/1/3/0/6/130620958/27f2fe75da085.pdfIn PDF document text
    • http://usmgsol.com/uploads/1/3/0/7/130775528/banajujodem.pdfIn PDF document text
    • http://mail.mangrovefly.com/uploads/1/3/0/5/130539267/sawumojit.pdfIn PDF document text
    • http://the-wild-moon.com/uploads/1/3/0/5/130588433/de554aa.pdfIn PDF document text
    • http://www.2eam.com/uploads/1/3/0/7/130739260/vakenuk.pdfIn PDF document text
    • http://tallcloudmarketing.com/uploads/1/3/0/7/130776573/7652674.pdfIn PDF document text
    • http://www.monkeesconcerts.com/uploads/1/3/0/7/130739508/5fa737.pdfIn PDF document text
    • http://smtp.ektaacenter.org/uploads/1/3/0/4/130483142/9709824.pdfIn PDF document text
    • http://brightmustard.com/uploads/1/3/0/9/130969926/luzeri_novitopalukolo.pdfIn PDF document text
    • http://www.bluegreenandredconstruction.com/uploads/1/3/0/5/130550890/kedidu.pdfIn PDF document text
    • http://pinenutparadise.com/uploads/1/3/0/2/130288563/tejotexo.pdfIn PDF document text
    • http://www.abreanutrition.com/uploads/1/3/0/9/130969220/c835ece70f.pdfIn PDF document text
    • http://eighty4clothing.com/uploads/1/3/0/5/130545784/3976371.pdfIn PDF document text
    • http://725tattoostudio.com/uploads/1/3/0/3/130379561/mafanevazufo.pdfIn PDF document text
    • http://meshayla.com/uploads/1/3/0/5/130550697/0041c6fe0c7bc2.pdfIn PDF document text
    • http://mx.recordboxtruck.com/uploads/1/3/0/4/130489898/fawumowazibox_fasexuto_pasokibobato.pdfIn PDF document text
    • http://spectrum-capital.com/uploads/1/3/0/5/130542734/vanasu.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 4

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_off0000afcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFCB 8608 bytes
SHA-256: 45d0e7d9fc337f997a7230bc60725c2a17f5ff19935aa9cae508bd570e58fa9d
font_01_sfnt_off0000d0e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0E4 16036 bytes
SHA-256: 779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63

Open this report in the interactive analyzer, or submit your own file for analysis.