Malicious PDF — malware analysis report

Static analysis result for SHA-256 561bcc9b6ca3cffb…

MALICIOUS

PDF

44.1 KB Created: 2020-05-18 00:49:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: f8fd6d38cc33296d060a60ec8220dbd0 SHA-1: dc68a83570d8d1e840dceb73ed0755cba33c063c SHA-256: 561bcc9b6ca3cffb1ca18301bfc1fda36d0846e91a428456ae441bdeaa18f9c3
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a lure related to a Samsung TV catalogue, but its primary function appears to be a link farm. The PDF_SEO_LINK_FARM heuristic indicates the presence of numerous external links, likely intended to direct users to malicious or spam content. The ML_NYX_PDF_MALICIOUS score further supports the malicious nature of this document. 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://victoriasaesthetics.net/uploads/1/3/0/6/130620334/130620334.html#samsung+led+tv+catalogue+2017+pdf PDF link annotation
    • http://brusinagemmanutencaoesolda.com/uploads/1/3/0/4/130476102/1199329.pdfIn PDF document text
    • http://forterraacquisitions.com/uploads/1/3/1/4/131413040/2229648.pdfIn PDF document text
    • http://waddellswabbits.com/uploads/1/3/0/6/130639983/vawulunixowem-mirilelibozuj-parotabo.pdfIn PDF document text
    • http://thecraftybungalow.com/uploads/1/3/1/4/131406441/9d54470503e11.pdfIn PDF document text
    • http://braxtonbrooks.com/uploads/1/3/1/1/131164032/numofilem.pdfIn PDF document text
    • http://worshipworthywear.com/uploads/1/3/0/3/130379411/nexagefakufov-xilaburitibuk-votuweseriv-benalifopiluxi.pdfIn PDF document text
    • http://weinigkoolhydratencoach.nl/uploads/1/3/1/4/131453387/6049023.pdfIn PDF document text
    • http://aluwork.cl/uploads/1/3/0/8/130874113/8554977.pdfIn PDF document text
    • http://portfolioeek.com/uploads/1/3/0/9/130969682/noferewotob.pdfIn PDF document text
    • http://winefestmv.com/uploads/1/3/1/4/131453421/serupowas.pdfIn PDF document text
    • http://alex-ben.net/uploads/1/3/1/4/131409200/e79277ad.pdfIn PDF document text
    • http://angelguerrero.net/uploads/1/3/1/6/131607152/761bb48f745b9a.pdfIn PDF document text
    • http://odtopografia.com/uploads/1/3/0/6/130604093/lomoz.pdfIn PDF document text
    • http://stefaniefusi.com/uploads/1/3/1/4/131436978/1e27acf82b17.pdfIn PDF document text
    • http://midcitycarriages.org/uploads/1/3/0/2/130272988/9498089.pdfIn PDF document text
    • http://sognidolcigluten-freeproducts.com/uploads/1/3/0/5/130550781/3573331.pdfIn PDF document text
    • http://polaritygame.net/uploads/1/3/0/2/130289163/geviguw.pdfIn PDF document text
    • http://pappaslawgroup.net/uploads/1/3/0/6/130621366/refidosunit-nefuwurokirave.pdfIn PDF document text
    • http://countryroadspickleballclassic.com/uploads/1/3/0/7/130739575/jonaja.pdfIn PDF document text
    • http://eagletaxflorence.com/uploads/1/3/0/6/130604315/gegeweramiwadut.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
    • 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_off0000686f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x686F 11780 bytes
SHA-256: d4193ea8df54ecf477b05189f4983e1d074e68db5423807b405ec0655f4e55e0
font_01_sfnt_off00008ec9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EC9 16272 bytes
SHA-256: 4a1da061204ffeacf37fc13f7d5dbd4ebbee4cb191ea8a5d14a92661125848e7

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