Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5bb1d8ce4e4968c…

MALICIOUS

PDF

65.4 KB Created: 2021-01-21 03:07:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: dbcaa96a4ca7d5bf8117d857769201d1 SHA-1: 79c4975e7bb498bcbccf1ac80eee13bdede1c5a2 SHA-256: e5bb1d8ce4e4968c3d71c50eab6d4715632cae137269ed759da5d2a2505a9a53
126 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are hosted on disposable domains and appear to be part of a link farm. The primary malicious URL identified, https://jottigo.ru/aws?utm_term=cartoon+movies+free++in+telugu, suggests a lure for free movie downloads, a common tactic for phishing or malware distribution. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or trojan delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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://jottigo.ru/aws?utm_term=cartoon+movies+free++in+telugu PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4414680/normal_6007acace5efd.pdfIn PDF document text
    • https://site-1174138.mozfiles.com/files/1174138/porirapalizizu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454543/normal_5fb702be4ee74.pdfIn PDF document text
    • https://warevinigipa.weebly.com/uploads/1/3/4/8/134898994/96640.pdfIn PDF document text
    • https://site-1166067.mozfiles.com/files/1166067/fesusigeroj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474752/normal_5fae2d57b71cb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369308/normal_5fc4575f20e42.pdfIn PDF document text
    • https://guxipalun.weebly.com/uploads/1/3/1/8/131857363/025beb55f.pdfIn PDF document text
    • https://site-1178750.mozfiles.com/files/1178750/the_office_quiz_questions_and_answers.pdfIn PDF document text
    • https://rixonusoraj.weebly.com/uploads/1/3/0/7/130738646/3447296.pdfIn PDF document text
    • https://site-1217115.mozfiles.com/files/1217115/latest_bollywood_movies_from_hdmoviespoint.pdfIn PDF document text
    • http://tolujupa.22web.org/40311494829.pdfIn PDF document text
    • https://site-1167971.mozfiles.com/files/1167971/molarafotifuvov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373240/normal_5f8fe7e0dc9d4.pdfIn PDF document text
    • https://dutumeparozawa.weebly.com/uploads/1/3/1/1/131163590/28a7a3fe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://solujenujaki.epizy.com/projected_cash_flow_statement_template.pdfIn PDF document text
    • http://kadegezopofog.rf.gd/42772261968.pdfIn PDF document text
    • http://kagilabitivibe.epizy.com/candy_crush_jelly_saga_hack_apk.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b3f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3F2 5052 bytes
SHA-256: c32235630b48993d3e3b438db11b3376da57ea01baf74ec5f454dee95f4de338
font_01_sfnt_off0000c510.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC510 5016 bytes
SHA-256: b8a015be1e7c674e29678895863a017720f33fda9943a6a52fa7bb8495760485
font_02_sfnt_off0000d64e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD64E 9908 bytes
SHA-256: c7e21ec0df5beac2f020c3849132e115d7ee7d237fafbe3f8fb0ea80d07dee20

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