Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ccebc665f7e98eb…

MALICIOUS

PDF

38.6 KB Created: 2020-03-29 11:14:46 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-07
MD5: aa7aff7b7a62fb5cc7a154400009ca9e SHA-1: 182288e704cf8579e5f9054bcf355e92ff6ae2ce SHA-256: 9ccebc665f7e98eb6995b2977e1c4a64dba11cbc23399274a73ec95a580786bd
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, a technique often used for SEO poisoning or to distribute malicious content. The primary URL, http://74-123-77-252.mgwnet.com/uploads/1/3/1/3/131379116/131379116.html#que+es+la+fracciones+equivalentes, appears to be part of a link farm designed to attract traffic. The ML classifier strongly indicated maliciousness, supporting the conclusion that this PDF is part of a malicious distribution campaign.

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://74-123-77-252.mgwnet.com/uploads/1/3/1/3/131379116/131379116.html#que+es+la+fracciones+equivalentes PDF link annotation
    • http://frecklesthehusky.org/uploads/1/3/0/2/130287311/vizuf.pdfIn PDF document text
    • http://bymarysflowers.com/uploads/1/3/1/4/131408209/7177ea393e2c5.pdfIn PDF document text
    • http://masterclass-series.com/uploads/1/3/0/6/130621055/77c4a84d34948a4.pdfIn PDF document text
    • http://vincentserna.com/uploads/1/3/0/2/130288453/480f8ddb20fd.pdfIn PDF document text
    • http://hartlet.com/uploads/1/3/0/6/130620345/91ee6b4.pdfIn PDF document text
    • http://lacrl.us/uploads/1/3/0/5/130539437/zugususidimuzil.pdfIn PDF document text
    • http://mendridgerealty.com/uploads/1/3/0/5/130589057/558c31.pdfIn PDF document text
    • http://30warrenave.com/uploads/1/3/0/4/130489159/sawijijoz.pdfIn PDF document text
    • http://eanesbond.net/uploads/1/3/0/6/130639068/numepazovilo.pdfIn PDF document text
    • http://geurinphotography.com/uploads/1/3/0/5/130543285/ragiwiwumad-mugevibulene.pdfIn PDF document text
    • http://buckgraffiti.com/uploads/1/3/0/8/130874378/kuripexi-tukunexiduwit-fifotulenun.pdfIn PDF document text
    • http://gasloandco.com/uploads/1/3/0/7/130738799/33b08.pdfIn PDF document text
    • http://123-give.com/uploads/1/3/1/3/131397942/396d08daf.pdfIn PDF document text
    • http://josemiguel.co/uploads/1/3/0/6/130639994/3893144.pdfIn PDF document text
    • http://hazydaysinthesun.net/uploads/1/3/0/4/130483338/jitijusag-nedud-fawidekivo.pdfIn PDF document text
    • http://wbmcradio.com/uploads/1/3/0/6/130639641/3986719.pdfIn PDF document text
    • http://healbirth.com/uploads/1/3/1/4/131411762/1bd758.pdfIn PDF document text
    • http://northbeavercontracting.net/uploads/1/3/0/6/130640145/dd6e65f1a.pdfIn PDF document text
    • http://elkyess.com/uploads/1/3/0/4/130494059/6893132.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

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_off00006e05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E05 7972 bytes
SHA-256: 6ec70b3e2b413355a95926e322e2da6bb7f53f6e588f76c82c89ddee7c8df4ed

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