Malicious PDF — malware analysis report

Static analysis result for SHA-256 0acf98fdf77dd6a4…

MALICIOUS

PDF

97.0 KB Created: 2021-04-05 20:47:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 5ba46810f45b2981c1563850d2572cea SHA-1: cece0de8183f7d1e1562c0d0cc45f0f2b1c7f28e SHA-256: 0acf98fdf77dd6a4ee7b6eb1085bb985d2ff8024c36b337b68981232543cd1bb
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan. It contains an embedded URI pointing to 'resalured.ru' which is likely a phishing lure. The PDF also contains numerous other URLs, many hosted on disposable domains, suggesting a link farm or redirection infrastructure. No scripts were extracted, but the presence of external URIs and the ML/ClamAV detections strongly indicate a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://resalured.ru/award?keyword=understanding+apostolic+ministry+pdf PDF link annotation
    • http://mantenancie.com/delupegerovelajusazbu5gb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369781/normal_6060fcb18fc0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387715/normal_601913de68e9d.pdfIn PDF document text
    • http://nowatora.22web.org/score_bisap_pancreatitis.pdfIn PDF document text
    • http://bighome.space/30121289612koaos.pdfIn PDF document text
    • https://cdn.sqhk.co/xomatujod/hbhamhe/animal_jam_unblocked_login.pdfIn PDF document text
    • http://galosidijixiwu.mypressonline.com/cemento_armato.pdfIn PDF document text
    • http://bukanugizini.mygamesonline.org/adobe_photoshop_lightroom_tutorial.pdfIn PDF document text
    • http://vibolofisef.mywebcommunity.org/jukavotefofoga.pdfIn PDF document text
    • http://tryici.xyz/897255070036eamm.pdfIn PDF document text
    • https://cdn.sqhk.co/tezesafura/7AchbBc/dead_silence_movie_in_tamil_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373297/normal_6008fae1bba23.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bemuvubovewe.epizy.com/best_running_technique_for_beginners.pdfIn PDF document text
    • http://fufabufitilaf.epizy.com/42476933308.pdfIn PDF document text
    • http://dojidusajotat.epizy.com/19192028459.pdfIn PDF document text
    • http://bamomaw.epizy.com/91849847416.pdfIn PDF document text
    • http://mutodilevo.epizy.com/zuduvidumozi.pdfIn PDF document text
    • http://kojajopi.epizy.com/63699579240.pdfIn PDF document text
    • http://datufubizut.rf.gd/4939805904.pdfIn PDF document text
    • http://purupuladufuba.rf.gd/93859969794.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_off00013fd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FD3 5568 bytes
SHA-256: a636e61e5c0897c0894d66da0561c3b005a0404863bd1643a7ed3ddd14dc22ec
font_01_sfnt_off000152b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x152B9 10552 bytes
SHA-256: b183b3980e2e6139f1b925698f579bad72d747016b598819c2d2e91f0eebbd14

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