Malicious PDF — malware analysis report

Static analysis result for SHA-256 074e7dc739cecda9…

MALICIOUS

PDF

36.8 KB Created: 2020-03-22 02:45:50 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 67f50909cf2b9801db564498ebb8355b SHA-1: d69a5445b099ecbed16db993cd291a6bcc32e7b4 SHA-256: 074e7dc739cecda9bdb36bb3031018e10504e905ad60c1caf06731f489c0294b
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, contains URLs that are likely part of a link farm designed to direct users to malicious websites or download further payloads.

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://beatbunkr.com/uploads/1/3/0/9/130969899/130969899.html#intex+pool+filter+manual+pdf
    • http://mikeyhan.com/uploads/1/3/0/8/130814066/38a0956.pdf
    • http://krystalmichelle.com/uploads/1/3/0/7/130775563/6f46764559e075.pdf
    • http://maplegaming.ca/uploads/1/3/0/5/130546196/roxuxu.pdf
    • http://disacorp.com/uploads/1/3/0/7/130776567/a0cf904d.pdf
    • http://www.jackstompers.com/uploads/1/3/0/6/130620898/9875989.pdf
    • http://rudywalkerofficial.com/uploads/1/3/0/4/130477064/88417.pdf
    • http://beccabecca.shop/uploads/1/3/0/5/130541597/rirabizaduruv-zivarapokobu-buwotozuw-lijanikete.pdf
    • http://www.bellevuepreschool.net/uploads/1/3/0/6/130621015/dijuxutidivapu.pdf
    • http://www.immobranding.be/uploads/1/3/0/6/130604188/bozodalo_setinuwivesiso.pdf
    • http://bloggersforacause.com/uploads/1/3/0/7/130740086/majibo.pdf
    • http://william-balog-philanthropy.com/uploads/1/3/0/2/130291493/tanunokabuguval.pdf
    • http://boldexpressions-testwebsite.com/uploads/1/3/0/3/130323601/wepejilunak_tegukuf.pdf
    • http://quicktan423.com/uploads/1/3/0/8/130874400/1164848.pdf
    • http://nbmgonline.com/uploads/1/3/0/6/130640183/zitejifitakovosad.pdf
    • http://serenitystitchesny.com/uploads/1/3/0/6/130621859/3e5db7a54.pdf
    • http://www.erinian.com/uploads/1/3/0/4/130483205/nuwezas_luvuruwobewad_soxuzemu_sirosel.pdf
    • http://celticchurchmaui.org/uploads/1/3/0/3/130379529/7298301.pdf
    • http://www.pineapplesexpress.org/uploads/1/3/0/6/130620965/kebawepom-sowujojamega-wupovupigutexe-xeweripepar.pdf
    • http://mta-sts.mx.nrvprocessing.com/uploads/1/3/0/8/130874207/gerizuvurirora.pdf
    • http://21stcenturycomposition.com/uploads/1/3/0/4/130478123/gexunipapejixite.pdf
    • http://how-to-tie-a-tie.video/uploads/1/3/0/7/130739952/lapunopefasopepo.pdf
    • http://southfieldplumbing.org/uploads/1/3/0/8/130814229/jowuwenonufa-rejadujodapo.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_off00006442.bin
20b067a80b4b58c0a35de8fa87b358c8f7335378187b0664947a9b8cc9cb7a79		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6442 8216 bytes

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