Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c0f337b3c14354c…

MALICIOUS

PDF

64.0 KB Created: 2021-02-17 16:36:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 06c11c13b75168b7c9454013726a11b0 SHA-1: 458efeff1511295691465145f6b27caab93111a6 SHA-256: 7c0f337b3c14354c7ae212d395c0fc31cd85dfadfbd89faf9668cbcd1e678847
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, appears to contain metadata related to a heater, likely a lure to disguise the malicious intent. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://maypoin.ru/aws?utm_term=sundance+spa+sentry+850+heater PDF link annotation
    • https://bolowotusupiwam.weebly.com/uploads/1/3/5/3/135300352/3f48f21c32c.pdfIn PDF document text
    • https://kesiwupi.weebly.com/uploads/1/3/1/4/131407351/majolopin.pdfIn PDF document text
    • https://jafobepajimo.weebly.com/uploads/1/3/4/8/134881918/1348163.pdfIn PDF document text
    • https://vataripisak.weebly.com/uploads/1/3/4/6/134600115/5460420.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367290/normal_5fe45f1c6bad5.pdfIn PDF document text
    • https://cdn.sqhk.co/fapolokid/hghfjbe/go_kart_racing_las_vegas_sunset.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427103/normal_5ff4275a2c6bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483864/normal_6020753217126.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422628/normal_5ff718a8e6a66.pdfIn PDF document text
    • https://bapepewemeg.weebly.com/uploads/1/3/4/7/134702997/pipupug.pdfIn PDF document text
    • http://jenirafona.22web.org/56269812231.pdfIn PDF document text
    • https://puxetesotomu.weebly.com/uploads/1/3/0/7/130739839/dajirogemof.pdfIn PDF document text
    • https://silorofolukut.weebly.com/uploads/1/3/4/2/134265947/xuguxalijem.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vedujekobizu.rf.gd/41593768332.pdfIn PDF document text
    • http://nulabede.epizy.com/vce_exam_simulator_2._4_crack._zip.pdfIn PDF document text
    • http://xigurig.rf.gd/59985954110.pdfIn PDF document text
    • http://delozaroj.epizy.com/fopoverepanugoraxig.pdfIn PDF document text
    • http://fatixoromagik.epizy.com/mailchimp_email_template_design.pdfIn PDF document text
    • http://dibiremiva.rf.gd/12th_english_guide_free_2019.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_off0000bbc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBC3 5792 bytes
SHA-256: 229e19d8211e7b0b79a48b3ff96da348d80b850327a22660d898a6b00cf9214f
font_01_sfnt_off0000cf81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF81 10176 bytes
SHA-256: d1d03026763da5c4c5046252c8da8325ffa5061597e03152d939c432e42da139

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