Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fb5e5eb146ef8fb…

MALICIOUS

PDF

83.4 KB Created: 2021-04-02 07:01:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: c44f1240ad089d3e34c643472535bc8a SHA-1: 910e361dffd2801253eb1d8b0181166f5f258501 SHA-256: 0fb5e5eb146ef8fb42d9e4c29dcb8485f0234846d05c4d00c2b71c24a63d77db
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, with the primary URL pointing to a suspicious domain. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan. The presence of embedded URLs and the overall structure suggest an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://pelibifir.ru/aws?utm_term=dulces+mentiras+amargas+verdades+libro+1+pdf+google+drive PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4482207/normal_5fd053778cef7.pdfIn PDF document text
    • http://ganitigusawev.mygamesonline.org/danelesox.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419413/normal_5fff4d4baddab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468563/normal_6002b2282abec.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500189/normal_5ffc1992e722b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379602/normal_604842582ac7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422386/normal_602ac050a6c7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387427/normal_60552cf487163.pdfIn PDF document text
    • http://tapidiv.medianewsonline.com/dell_latitude_e7450_specs.pdfIn PDF document text
    • http://punejew.mygamesonline.org/anthropological_view_of_self.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392215/normal_5ff6b0f6c1b2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449776/normal_601a2ca4ae4b1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366397/normal_5ffcabb1d3334.pdfIn PDF document text
    • http://bukenisefino.mygamesonline.org/how_to_maintain_daikin_air_conditioner.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://989244f3-426d-4557-b4f1-0018dac9047c.filesusr.com/ugd/57c819_b091f2e0661749668ad66d196cee0789.pdf?index=trueIn PDF document text
    • https://0621cc9e-6449-4e8a-a8bd-baee9ad62a2c.filesusr.com/ugd/affb4a_0baba24e86254b38b6fcfd15deeb4005.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kovezux/amu_online_form_last_date_2019.pdfIn PDF document text
    • https://eb22cd64-ba88-4d74-9269-d2b8937e52af.filesusr.com/ugd/3b217d_866e729923b6473d9abc0c414cde1f90.pdf?index=trueIn PDF document text
    • https://46fb9a51-9e16-4ad8-811e-2f7ed01702f7.filesusr.com/ugd/53363c_43df3e0c3f41409787067854cee18f3a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vunizi/fesurizamusupolezexas.pdfIn PDF document text
    • https://s3.amazonaws.com/vawoginele/tejomurefudukifiser.pdfIn PDF document text
    • http://kufekisawisewo.onlinewebshop.net/analisis_financiero_vertical_y_horizontal.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_off000102f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102F1 5724 bytes
SHA-256: 3b08d318413457dfca41187b5f55432368a964bfe54faf59e83e8906f6b4e174
font_01_sfnt_off00011663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11663 12016 bytes
SHA-256: b14d604a967015e42da7210775767d61d856643c653daf3b1b8efb19d7215ec9

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