Malicious PDF — malware analysis report

Static analysis result for SHA-256 df0aafe1df1dab88…

MALICIOUS

PDF

84.1 KB Created: 2021-04-27 04:19:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 236bfa7374db7d24e6e91080c2ba498d SHA-1: 57e2cb67e72a47abe0068ff4ebf4a5ca06b79fb8 SHA-256: df0aafe1df1dab882f85333e64bb13b6f1fdd9b76b7800e092b642fc9035b15b
156 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, many of which are suspicious or lead to unknown domains, indicating a link farm or phishing attempt. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan. The presence of numerous external URIs suggests an attempt to redirect the user to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://seumenha.ru/strik?utm_term=percy+jackson+sea+of+monsters+tamil+dubbed+full+movie+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4501027/normal_602c4dbbe233d.pdfIn PDF document text
    • http://gebikomuxe.getenjoyment.net/criminal_law_cases_and_materials.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480755/normal_5fc882c1b4f10.pdfIn PDF document text
    • http://palaxofivuleduj.medianewsonline.com/21495256324.pdfIn PDF document text
    • http://xoroketogejuxe.mywebcommunity.org/longman_dictionary_download_for_mac.pdfIn PDF document text
    • https://revasarubon.weebly.com/uploads/1/3/5/2/135295272/5786411.pdfIn PDF document text
    • https://gadufekovofu.weebly.com/uploads/1/3/4/7/134764592/3671801.pdfIn PDF document text
    • http://manidat.sportsontheweb.net/30206690697.pdfIn PDF document text
    • https://koxiguxizabi.weebly.com/uploads/1/3/1/1/131163763/laloz.pdfIn PDF document text
    • https://wuluruvujomokax.weebly.com/uploads/1/3/5/3/135349857/lalodiwifudob.pdfIn PDF document text
    • https://mumifigade.weebly.com/uploads/1/3/4/3/134314269/kekelizimopotivazipa.pdfIn PDF document text
    • https://ruwuragawani.weebly.com/uploads/1/3/4/3/134383911/e1d32b.pdfIn PDF document text
    • https://nidikibadut.weebly.com/uploads/1/3/1/4/131453007/2158572.pdfIn PDF document text
    • http://tonemisi.medianewsonline.com/kisijugozogubevode.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/muwomapotumugi/transformers_prime_optimus_prime_and_megatron.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/25th_anniversary_invitation_templates_free.pdfIn PDF document text
    • http://wuwinot.rf.gd/michelin_guide_japan_tokyo.pdfIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/wuninineleratef.pdfIn PDF document text
    • https://s3.amazonaws.com/kefiperizonofu/kaxodofidab.pdfIn PDF document text
    • https://s3.amazonaws.com/nawosineromigi/61207052160.pdfIn PDF document text
    • http://pigasupozev.epizy.com/21880392373.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
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8BD 5704 bytes
SHA-256: 8334818517620aa8af9a16ece995be32f45ffd7d5d96b6d42056d7e4a467533b
font_01_sfnt_off0000fc26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC26 5624 bytes
SHA-256: c31b87922369cd3714623a1daf105d14df640674eabe56df5b92359864adb743
font_02_sfnt_off00010e39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E39 11156 bytes
SHA-256: 0a5e7025f90945392c08e7bfbab5075725e65ecb60f2087148d6f2d6b9809dcd
font_03_sfnt_off000133fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133FA 3528 bytes
SHA-256: 5b0d3b7cdfe4506a55bc1188aab632e7bacdace683e5f37e5a5967efb30d795b

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