Malicious PDF — malware analysis report

Static analysis result for SHA-256 a77c8bb2fa06f965…

MALICIOUS

PDF

40.1 KB Created: 2020-05-22 08:16:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-15
MD5: 61eb151a6710f48fc846addc60f512bd SHA-1: 412f0b5e92e53feb79dbd2e037ff99dcd743c380 SHA-256: a77c8bb2fa06f96599a05546edfb1bcc84d97c83271af0d0b455e1256f5d4015
96 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, a technique often used for SEO spam or to direct users to malicious sites. The heuristic PDF_SEO_LINK_FARM specifically identifies this behavior, indicating a likely attempt to manipulate search engine results or distribute malware through a link farm. The document body itself is heavily garbled, but the presence of URLs suggests the primary intent is to redirect the user. No scripts were extracted from this sample.

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://luxglobaltravel.voyagerwebsites.com/uploads/1/3/0/8/130813876/130813876.html#k%25C3%25B6nnen+Sie+Erdnussbutter+mit+gastrit PDF link annotation
    • http://sohoflorals.com/uploads/1/3/1/4/131407665/sinukupadigefa.pdfIn PDF document text
    • http://partnersdrivingstem.org/uploads/1/3/1/6/131636675/f26e4e7e7c23c.pdfIn PDF document text
    • http://pipsgardendesign.com/uploads/1/3/1/1/131163579/2982520.pdfIn PDF document text
    • http://growmyganesha.com/uploads/1/3/1/4/131455475/ab3fdab.pdfIn PDF document text
    • http://thunderridgetitans.com/uploads/1/3/0/3/130323506/9d5d1f.pdfIn PDF document text
    • http://bluntexpresson.com/uploads/1/3/0/7/130776006/fe7c2.pdfIn PDF document text
    • http://sacredpathbeauty.com/uploads/1/3/0/5/130590561/7506767.pdfIn PDF document text
    • http://walshranch-realtors.com/uploads/1/3/0/3/130379743/138d863e94c30.pdfIn PDF document text
    • http://breckenridgeconstructioninc.com/uploads/1/3/0/5/130540869/e78a1d.pdfIn PDF document text
    • http://heavenonearthhealth.com/uploads/1/3/0/6/130639380/70d5da.pdfIn PDF document text
    • http://josephriccio.com/uploads/1/3/1/3/131381452/d04be94b76f95d.pdfIn PDF document text
    • http://sustainabilitybusinessworks.com/uploads/1/3/0/5/130588762/limoda.pdfIn PDF document text
    • http://oscarthedumpertruck.com/uploads/1/3/0/4/130435644/kukuwedot.pdfIn PDF document text
    • http://breelandisland.com/uploads/1/3/0/4/130477278/dederasenok.pdfIn PDF document text
    • http://avaparmelee.com/uploads/1/3/0/6/130604511/bf49799673861.pdfIn PDF document text
    • http://wynnefoa.com/uploads/1/3/0/7/130740496/6576732.pdfIn PDF document text
    • http://dotradio.org/uploads/1/3/1/3/131379134/24d350ed4671022.pdfIn PDF document text
    • http://commercialloanlender.com/uploads/1/3/0/7/130740129/5090345.pdfIn PDF document text
    • http://droneswrx.com/uploads/1/3/1/8/131856076/f29daebb541.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 4

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_off00006c62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C62 11624 bytes
SHA-256: ea0f839b101d9685df405f83016459b10329dd788420f21b050bb45e1fc49433

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