Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6155cde141141ee…

MALICIOUS

PDF

37.7 KB Created: 2020-03-11 14:03:23 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c4e407da3b29f16bcf5dc051eb83082b SHA-1: fa41ad6f79affc493637b4c19e6c0efc3794e104 SHA-256: f6155cde141141ee1c1920c228e642b57f7bd2e87e509af193b90842ed7ae81d
94 Risk Score

Malware Insights

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

The PDF document is classified as malicious by an ML model with high confidence. It contains a large number of external links, many of which point to other PDF files hosted on various domains, suggesting a link farm or redirection mechanism. The document body text indicates a lure related to a 'rent to buy contract template south africa', likely intended to deceive users into clicking the embedded links.

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://carmelbayplaceholder.devsite-1.com/uploads/1/3/0/6/130621868/130621868.html#rent+to+buy+contract+template+south+africa
    • http://stfprojects.com/uploads/1/3/0/2/130271209/safidetuzutule.pdf
    • http://paramoadriana.com/uploads/1/3/0/4/130490036/6664035.pdf
    • http://dragonclasp.com/uploads/1/3/0/3/130379412/8611449.pdf
    • http://laserfotoworx.com/uploads/1/3/0/6/130620142/2574779.pdf
    • http://jscpowdercoating.com/uploads/1/3/0/6/130604498/6be20.pdf
    • http://bkhouse.services/uploads/1/3/0/5/130589373/lefetetowejejum_sipakepe_kidetesifodos.pdf
    • http://www.cypressranchaquatics.com/uploads/1/3/0/6/130620348/xonotugumegon.pdf
    • http://votepedrini.com/uploads/1/3/0/6/130640105/pivemogatu.pdf
    • http://www.metuchendentistry.com/uploads/1/3/0/9/130968992/1845153.pdf
    • http://bellabee.org/uploads/1/3/0/2/130289474/8764a38d9b05b.pdf
    • http://www.baguiosoundsrental.com/uploads/1/3/0/9/130969717/dazewutabirufo_zolavefanide_lodabofafate_xugekilav.pdf
    • http://patsyshairfashion.com/uploads/1/3/0/6/130605432/pulinolazexuga-jesenanut.pdf
    • http://walkrunleap.com/uploads/1/3/0/7/130739029/2018399.pdf
    • http://mta-sts.mail.visualratio.com/uploads/1/3/0/2/130274199/5231742.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c0a.bin
095a2c3124dd50d4f71487ddb045af3655257b1c76a68bcf6bf2dcff31337b2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C0A 7592 bytes

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