Malicious PDF — malware analysis report

Static analysis result for SHA-256 003a40d8f675911c…

MALICIOUS

PDF

36.6 KB Created: 2020-06-13 22:37:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ced648cd6665591d0700bedf2770479 SHA-1: eade969a8916e80056ed984be42f0429c840241e SHA-256: 003a40d8f675911ccc8dedc6106b15fb4bbcfa35175e3409150c35068d1471fa
156 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics as malicious, including ClamAV and an ML classifier. It contains a large number of external links, characteristic of a link farm or SEO spamming technique. The embedded URLs suggest an attempt to redirect users to potentially malicious content hosted on various domains.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • ClamAV: Pdf.Dropper.Agent-9105374-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9105374-0
  • 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://chutze.com/uploads/1/3/0/4/130476429/130476429.html#ella+sembilu+youtube
    • http://hostmaster.leighanddaire.com/uploads/1/3/0/7/130775392/sudopinagifenap.pdf
    • http://reardonchrisquiz.com/uploads/1/3/0/7/130738661/nalizegijak.pdf
    • http://urbanstones.net/uploads/1/3/0/5/130588393/2809939.pdf
    • http://robertjorgensencom.com/uploads/1/3/0/6/130604657/kazolojitap.pdf
    • http://unitymodel.nl/uploads/1/3/0/3/130313790/pijarevoxiwuriw-finini.pdf
    • http://mx.carolinascki.org/uploads/1/3/0/2/130289577/bidifopader.pdf
    • http://sweatcycling.org/uploads/1/3/1/8/131858661/2756033.pdf
    • http://peakphysicaltherapy870.com/uploads/1/3/0/6/130620975/2237677.pdf
    • http://bamboohcorganization.com/uploads/1/3/1/4/131453355/velumigexamazixeba.pdf
    • http://sustainablythin.com/uploads/1/3/0/9/130969046/wutinovipa_biduseg_rumumajume_fuduvidalufe.pdf
    • http://matchaspa.net/uploads/1/3/0/6/130604220/07e4346.pdf
    • http://thelittlemediacompany.co.uk/uploads/1/3/0/8/130874569/1880726.pdf
    • http://energetic.markperreault.com/uploads/1/3/0/5/130539492/7069961.pdf
    • http://74-123-78-212.mgwnet.com/uploads/1/3/0/5/130539373/zepazakutuzitum.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://nekewinijum.files.wordpress.com/2020/06/99224715932.pdf
    • https://sufajase.files.wordpress.com/2020/06/2953670058.pdf
    • https://jekiwex.files.wordpress.com/2020/06/4641327560.pdf
    • https://xujeveva.files.wordpress.com/2020/06/72626515916.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060f7.bin
68bac4ce5be50c844e2f66b820494679dec8353ecf737a61c0445bf9ebcdc8a1
pdf-font-stream PDF embedded font (sfnt) at offset 0x60F7 11412 bytes