Malicious PDF — malware analysis report

Static analysis result for SHA-256 96886a37f944ec53…

MALICIOUS

PDF

49.2 KB Created: 2020-04-06 05:52:11 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 6c5473f1a7be84ad7ad2783527982d7d SHA-1: b9414d4df5aefa381a2c46da9c73d15ec5251bf3 SHA-256: 96886a37f944ec535dc544a72561aaf2aa4de16ce5769c54b90a8f1e52b2a70b
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, contains a reference to 'Definicion de curriculum vitae ejemplo' and includes the primary malicious URL. This suggests a lure to a link farm designed to manipulate search engine results or distribute further malicious content. No scripts were extracted from this sample.

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://classicweddingensembles.com/uploads/1/3/0/9/130969489/130969489.html#definicion+de+curriculum+vitae+ejemplo PDF link annotation
    • http://fulvicacid.ch/uploads/1/3/0/7/130775806/gisuxowapinef.pdfIn PDF document text
    • http://discoveringmytrueself.com/uploads/1/3/0/2/130289365/5400879.pdfIn PDF document text
    • http://trustcare247.com/uploads/1/3/0/9/130969990/8357b384f1ea.pdfIn PDF document text
    • http://thegallerydifferent.com/uploads/1/3/0/5/130540664/e0b4cd5.pdfIn PDF document text
    • http://chinemassage.net/uploads/1/3/0/2/130289618/965567.pdfIn PDF document text
    • http://almahruqicars.com/uploads/1/3/0/5/130545627/895f7dcb2c0606.pdfIn PDF document text
    • http://mta-sts.mx.transitionplan.org/uploads/1/3/0/7/130739852/bazakakovikis.pdfIn PDF document text
    • http://smluukkonen.org/uploads/1/3/0/8/130873783/satagunubesa.pdfIn PDF document text
    • http://thatholisticgirllife.com/uploads/1/3/0/2/130272862/guleloxijad.pdfIn PDF document text
    • http://redandgreen.net/uploads/1/3/0/7/130775970/5287660.pdfIn PDF document text
    • http://sparksdrone.com/uploads/1/3/0/5/130550803/c1d20e1a3c1.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
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000743d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x743D 9328 bytes
SHA-256: afa756288d62778d895b823f2c96cec07ce425de445bdc8697e06edf950d81a2
font_01_sfnt_off00009614.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9614 2652 bytes
SHA-256: e91619dfd4c72a85464d95ef1ba4e67df13020651c42071bafbe521a61d9f7fc
font_02_sfnt_off00009f7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F7B 16252 bytes
SHA-256: ef2657214b12f3b022f2c72363670f3a52f049a8bafbd58f5470a192bc4d873e

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