Malicious PDF — malware analysis report

Static analysis result for SHA-256 5054d5045f9f5895…

MALICIOUS

PDF

38.8 KB Created: 2020-03-16 08:18:31 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 848d9e628f329c40fcda53a839705d68 SHA-1: 037c80b75786b82b1e8e5ce09383a4c12715564a SHA-256: 5054d5045f9f589572a0ee3818070aa46d03bea2f01ae22ada0fb3c09bb02276
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a link farm or distribution mechanism. The embedded URLs and the document body text, though partially corrupted, indicate a focus on directing users to external content. No scripts were extracted from this sample, limiting the analysis of direct malicious actions beyond link distribution.

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://mzsj.brdge.org/uploads/1/3/0/5/130542852/130542852.html#major+causes+of+water+pollution+pdf PDF link annotation
    • http://www.templesbc.org/uploads/1/3/0/7/130738708/7642013.pdfIn PDF document text
    • http://poolsleak.net/uploads/1/3/0/6/130639848/litafelaz-vafoke-fofasejapuvabi.pdfIn PDF document text
    • http://www.theamericanrevelation.com/uploads/1/3/0/6/130621732/240a4.pdfIn PDF document text
    • http://betrecordings.com/uploads/1/3/0/5/130551839/woxol.pdfIn PDF document text
    • http://www.gjemporium.shop/uploads/1/3/0/3/130379222/danokulenamiwiwonut.pdfIn PDF document text
    • http://www.radcycles.co.nz/uploads/1/3/1/0/131071278/1575631.pdfIn PDF document text
    • http://mta-sts.mtnsaa.org/uploads/1/3/0/7/130775182/velibe-pixuv-vofoma-suxorug.pdfIn PDF document text
    • http://cristalbay.com/uploads/1/3/0/2/130289692/561dc30fbf05b1c.pdfIn PDF document text
    • http://steptkd.org/uploads/1/3/0/2/130289550/torekajofux_zorenowivinu.pdfIn PDF document text
    • http://thesweetestsounds.com/uploads/1/3/0/6/130639147/5989401.pdfIn PDF document text
    • http://hostmaster.provantagepropertysolutions.com/uploads/1/3/0/8/130814076/tixuxanetibuxebunaf.pdfIn PDF document text
    • http://oddamericancompany.com/uploads/1/3/0/2/130289724/xasoremeputeve_wifapame_lofuka.pdfIn PDF document text
    • http://www.cgpl.fr/uploads/1/3/0/7/130740455/ac81d0b.pdfIn PDF document text
    • http://katedunsmoresmith.com/uploads/1/3/0/8/130814529/fukomumirijatepa.pdfIn PDF document text
    • http://www.glitznglamncgirl.com/uploads/1/3/0/2/130272352/3199eb.pdfIn PDF document text
    • http://montessorimentor.org/uploads/1/3/0/7/130776033/gesamomijogefo.pdfIn PDF document text
    • http://porntaza.com/uploads/1/3/0/4/130488273/xovimojitarod.pdfIn PDF document text
    • http://elisestone.com/uploads/1/3/0/6/130621484/8457052.pdfIn PDF document text
    • http://jennahutchins.com/uploads/1/3/0/7/130738786/b814ebbab.pdfIn PDF document text
    • http://www.lucaseportfolio.com/uploads/1/3/0/7/130739519/7206966.pdfIn PDF document text
    • http://littlerayrox.com/uploads/1/3/0/5/130588824/supifokoruni.pdfIn PDF document text
    • http://mta-sts.mx.raiseyourgarden.com/uploads/1/3/0/5/130589099/ririge_kuzanaze_texipariku_tavokeganugela.pdfIn 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

Related samples 2

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007187.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7187 7124 bytes
SHA-256: 6a16e6aded1ba286ade9cb2eb76f596ebb583fad1cb4a292bee7da8f4d764540

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