Malicious PDF — malware analysis report

Static analysis result for SHA-256 19f5d157b5f98ebb…

MALICIOUS

PDF

73.1 KB Created: 2021-03-13 15:18:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: b112bc7e88f9bfadb8d571c1854e4737 SHA-1: 345095cd3ada844f5957b53b3bc806e91b141d32 SHA-256: 19f5d157b5f98ebb68dc536ac06d5b95e130b56872df72ae81abe5aa7a04cc1f
176 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including PDF_SEO_LINK_FARM and ML_NYX_PDF_MALICIOUS, indicating a high likelihood of malicious intent. The presence of numerous external links, such as https://ponafet.ru/award?keyword=can+you+feel+the+love+tonight+chords+pdf and https://xikunozazoteta.weebly.com/uploads/1/3/1/4/131453294/xaxasebe_jojomidusefal_liludalo_wogisupezerava.pdf, suggests a link farm or phishing campaign. ClamAV also detected it as Pdf.Phishing.Trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://ponafet.ru/award?keyword=can+you+feel+the+love+tonight+chords+pdf PDF link annotation
    • https://xikunozazoteta.weebly.com/uploads/1/3/1/4/131453294/xaxasebe_jojomidusefal_liludalo_wogisupezerava.pdfIn PDF document text
    • http://tigafik.mygamesonline.org/how_much_does_it_cost_to_trademark_a_logo_in_canada.pdfIn PDF document text
    • https://wikumegi.weebly.com/uploads/1/3/1/4/131407968/6687984.pdfIn PDF document text
    • https://wiwujakibites.weebly.com/uploads/1/3/0/7/130740442/temaxuzafuvodiruz.pdfIn PDF document text
    • https://zapedumukovig.weebly.com/uploads/1/3/0/7/130775012/kokoduso.pdfIn PDF document text
    • http://modaxosemerevik.22web.org/97336303621.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tarexokugizizo.epizy.com/nisapowelawepar.pdfIn PDF document text
    • https://s3.amazonaws.com/gisujubolidine/sketching_from_the_imagination_creatures_and_monsters_download.pdfIn PDF document text
    • http://numotuvafoja.epizy.com/paziz.pdfIn PDF document text
    • https://s3.amazonaws.com/pafexegud/xedobaduvawozabi.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/34515148829.pdfIn PDF document text
    • http://ruxuvejefo.epizy.com/wodinel.pdfIn PDF document text
    • http://talagamezibupip.epizy.com/cheque_requisition_form_template_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/fusopoxipo/fesokelugi.pdfIn PDF document text
    • http://dowinoxerirud.epizy.com/gateway_b1_tests_answers_unit_9.pdfIn PDF document text
    • http://bujijawuta.atwebpages.com/the_book_thief_markus_zusak_sparknotes.pdfIn PDF document text
    • http://juxudawalugevop.epizy.com/online_chess_strategy_guide.pdfIn PDF document text
    • http://sajatuvireguta.atwebpages.com/vivigifivasipeneri.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/jowiwerazu.pdfIn PDF document text
    • https://s3.amazonaws.com/jeponowon/fall_in_love_casanova_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/46391574696.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/1008043559.pdfIn PDF document text
    • http://rerorisa.epizy.com/thin_layer_chromatography_experiment.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF08 5484 bytes
SHA-256: 85f4ceb4c1d69faff67f8b5b5dd2050e207cfc05f84b99b6fd6418776ec80e7f
font_01_sfnt_off0000f1bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1BF 10800 bytes
SHA-256: 6b3b39b4c2d465378d135cbce1d9452f123384bfab4af1db798b20490cede1eb

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