Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dfe8b98d99d0f5f…

MALICIOUS

PDF

70.9 KB Created: 2021-03-19 19:21:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ae5dffa9eb4cfcd27eb8b6654a6b2e5 SHA-1: 28b023a0d9ff019a151c523a9db03f5ac2fe6d8e SHA-256: 2dfe8b98d99d0f5fbf777e7af3f13833d30a10d93e7a4bbd1148b3785156ccd9
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many of which are likely part of a link farm designed to manipulate search engine results or distribute further malicious content. The embedded URLs suggest a phishing or malware distribution attempt, masquerading as a printer setup guide.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://dafemum.ru/aws?utm_term=connect+to+brother+printer+wifi+direct
    • https://static.s123-cdn-static.com/uploads/4421350/normal_5fff0cc66b9f4.pdf
    • http://vozivovog.scienceontheweb.net/padaw.pdf
    • https://fazebepipetuko.weebly.com/uploads/1/3/1/3/131384618/nudokadexel.pdf
    • http://wutanumijejol.sportsontheweb.net/calcular_el_volumen_de_prismas_y_cilindros.pdf
    • https://static.s123-cdn-static.com/uploads/4421208/normal_5fdd63a16a865.pdf
    • http://kufowawixapiva.sportsontheweb.net/who_is_the_tempest_in_the_tempest.pdf
    • https://tavadubamik.weebly.com/uploads/1/3/4/4/134473349/bunupebadorur.pdf
    • https://kavikazu.weebly.com/uploads/1/3/5/3/135392310/31bdc.pdf
    • http://kuzososo.mygamesonline.org/alter_ego_plus_free_download.pdf
    • https://cdn-cms.f-static.net/uploads/4426822/normal_600e358291fc0.pdf
    • https://fefokivaz.weebly.com/uploads/1/3/0/7/130776727/6988366.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://popofisofol.myartsonline.com/14069537010.pdf
    • https://uploads.strikinglycdn.com/files/e3c9d4da-c623-49b1-93b1-16adbfc58454/kobizedufiwog.pdf
    • https://uploads.strikinglycdn.com/files/11e9956f-9c9f-4178-8d71-fad0667f27eb/the_alienist_season_2_episode_1_summary.pdf
    • https://d451e762-8e00-4155-9971-9512d28d2528.filesusr.com/ugd/b52961_5c20d532e48a4c5ba33b1fbd5a63013b.pdf?index=true
    • https://0f926834-650c-4d5a-b53c-ad60ae412ccc.filesusr.com/ugd/6a44d8_1fed156143d344f88807606035de032c.pdf?index=true
    • http://redifigikutusoj.myartsonline.com/7734334098.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9a2.bin
a42a25b9ca834faa7ac6f159530cf510ad1cd5c41340c0d0d485b027d203d922		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD9A2 4960 bytes
font_01_sfnt_off0000ea87.bin
cdf1ee948cd8294d0f44daced7887852aa82f2a2534af0072b9fb322d0218a28		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA87 10600 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.