Malicious PDF — malware analysis report

Static analysis result for SHA-256 978651bd64d1731f…

MALICIOUS

PDF

51.1 KB Created: 2020-04-11 02:33:09 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c1a0fd6a85af13a3f5734c6f4b79e412 SHA-1: 6a9145371cd128c8d11694a03f5364955b02e54f SHA-256: 978651bd64d1731feb9f3dda11019002b7f9da446de740506bb1cc03ce64d50e
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links pointing to various domains, characteristic of a link farm. The ML classifier strongly indicated maliciousness. The primary purpose appears to be redirecting users to potentially malicious content hosted on these external sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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
  • 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://rebeccalaplacaattia.com/uploads/1/3/1/1/131164090/131164090.html#descripci%C3%B3n+objetiva+y+subjetiva
    • http://idealdance.net/uploads/1/3/0/4/130478174/8511544.pdf
    • http://nicolasandysmillinery.com/uploads/1/3/0/6/130605388/xiwufetenada.pdf
    • http://louiseneaveportfolio.com/uploads/1/3/0/6/130620578/wumuvos_paduravazumomu_tigotunubudez.pdf
    • http://indianahomestaging.net/uploads/1/3/1/4/131437493/talamilegijozej.pdf
    • http://gtyp.org/uploads/1/3/0/2/130289400/8b85f6bd8330b.pdf
    • http://623hwy71.com/uploads/1/3/0/3/130313242/4c99daa.pdf
    • http://jmplaser.com/uploads/1/3/0/5/130589315/rejif_jowolusojoduziv_xuzajuz_zarotatomafud.pdf
    • http://ngdawghouse.org/uploads/1/3/0/6/130620693/boweduzeva.pdf
    • http://nicolaheatharts.com/uploads/1/3/0/5/130588261/lisikigatejunotonig.pdf
    • http://bentanimalshelter.com/uploads/1/3/1/3/131383954/1220876.pdf
    • http://cathyhepworth.com/uploads/1/3/0/5/130550983/wapezobe-dasomojiro-runulilotokis-givisikugumi.pdf
    • http://hotgirlapproved.com/uploads/1/3/1/0/131070336/kexujajutiv_robizotowavijo_xokologujosaju.pdf
    • http://performermi.com/uploads/1/3/1/3/131383771/kitiwugikibilu_dikusemuf_wexekutema.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008883.bin
89ecb4acf1472987e5ca2f1c7e0d9f308d2b38744951a47c85a9a25b88f8d2c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8883 9140 bytes
font_01_sfnt_off0000a95f.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA95F 16036 bytes

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