Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6eb751fd208e3bb…

MALICIOUS

PDF

39.0 KB Created: 2020-05-24 09:05:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-08-25
MD5: 52a3868f390c7749e4b9097f0d4ba649 SHA-1: f78a4316ea9c14437c7c7069cc4eba5b75345125 SHA-256: f6eb751fd208e3bbd594b5ea0c645b51f83dda0194e47d54e86760fba6eb3ad4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. This suggests the document is part of a link farm operation, likely for SEO manipulation or to distribute further malicious content. The ClamAV detection as Pdf.Dropper.Agent-9224094-0 further supports its malicious nature. No scripts were extracted, limiting the analysis of direct payload delivery mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • ClamAV: Pdf.Dropper.Agent-9224094-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9224094-0
  • 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://thesportsintuition.com/uploads/1/3/0/4/130483583/130483583.html#medici+season+2+cast PDF link annotation
    • http://amiconnections.com/uploads/1/3/1/8/131856290/dunezotadules.pdfIn PDF document text
    • http://cmbtp.org/uploads/1/3/0/6/130620719/fe6a171e9bc731.pdfIn PDF document text
    • http://lovespellsfordesires.com/uploads/1/3/0/5/130551890/9598183.pdfIn PDF document text
    • http://smartcareerdecisions.com/uploads/1/3/0/6/130604804/vuwezu-zoxifevo-gajurajazibag-papap.pdfIn PDF document text
    • http://emmaelizabethphotography.com/uploads/1/3/0/4/130488565/zebefuma-rowipurenes-pukosifil-tevakun.pdfIn PDF document text
    • http://thelogout.net/uploads/1/3/1/4/131438453/6934381.pdfIn PDF document text
    • http://octelepsychiatry.com/uploads/1/3/1/1/131164398/luzozivutilo.pdfIn PDF document text
    • http://evangelismseminar.org/uploads/1/3/0/2/130272275/3328851.pdfIn PDF document text
    • http://asideofbread.com/uploads/1/3/0/5/130550697/marolupupiwazem-xamifale-vudezenajuxag.pdfIn PDF document text
    • http://freakmaniac.com/uploads/1/3/1/8/131857117/5998176.pdfIn PDF document text
    • http://kennethtanmedicalclinic.com/uploads/1/3/0/6/130639895/4481583.pdfIn PDF document text
    • http://comfycribs.com/uploads/1/3/0/6/130603867/fewumajugibif.pdfIn PDF document text
    • http://bockwindmuehle-wettmar.de/uploads/1/3/0/7/130739535/e7c3f.pdfIn PDF document text
    • http://xbee.info/uploads/1/3/1/4/131437941/9531727.pdfIn PDF document text
    • http://relaymobile.us/uploads/1/3/0/7/130738823/74e90cfca.pdfIn PDF document text
    • http://alfredrosenberg.org/uploads/1/3/0/5/130551823/9379cba03819d.pdfIn PDF document text
    • http://theklinegallery.com/uploads/1/3/0/4/130435712/5491036.pdfIn PDF document text
    • http://ka-dig.com/uploads/1/3/0/7/130740257/6032117.pdfIn PDF document text
    • http://thenaturalway.shop/uploads/1/3/1/0/131070619/saxavejob.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
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ba6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA6 10804 bytes
SHA-256: 12183f5884fba42f2e726d906d4a234077ed7fcd42379ff060de7e1e2c9b7520

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