Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e5d02c9a38632de…

MALICIOUS

PDF

79.7 KB Created: 2021-06-08 05:38:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 212f5bce0c5683f015a995de663a453b SHA-1: e94a374d43f237807c7a2578eaaaeda570061f3f SHA-256: 1e5d02c9a38632de5cf39a864cfccaa0a4cf636a822df3a90e5d96f29f033674
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to direct users to potentially malicious websites. The document body, though partially corrupted, contains a search query related to 'Is netflix included with comcast', which is likely a lure to encourage clicks on the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • 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://medvor.ru/pbw?utm_term=is+netflix+included+with+comcast PDF link annotation
    • https://static.s123-cdn-static-d.com/uploads/4476150/normal_60b24a73ec6ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448976/normal_601b1d53111b3.pdfIn PDF document text
    • https://xikewewojan.weebly.com/uploads/1/3/4/0/134095915/7678080.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451563/normal_604f1f612dedf.pdfIn PDF document text
    • https://zopewurexolo.weebly.com/uploads/1/3/4/5/134519391/e435eda67a5.pdfIn PDF document text
    • https://duzaguzu.weebly.com/uploads/1/3/1/4/131406181/guvofegupusi_zenexulofupomu_palegoxakozos_senanifedix.pdfIn PDF document text
    • https://mabatuba.weebly.com/uploads/1/3/5/3/135303696/5df97d107.pdfIn PDF document text
    • https://panumelu.weebly.com/uploads/1/3/4/6/134668876/sitanegivuli.pdfIn PDF document text
    • https://xaberekulokoka.weebly.com/uploads/1/3/1/8/131856377/3ffda25d706.pdfIn PDF document text
    • https://xaxomawiso.weebly.com/uploads/1/3/5/3/135329970/kikixibitogupav-wazazupusewifax-javosaxolusiloz-kesoxixabozarus.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375889/normal_6056bd58d7a15.pdfIn PDF document text
    • https://sajefabavasa.weebly.com/uploads/1/3/2/7/132710755/4648051.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zopujoxobug.pbworks.com/f/zunomi.pdfIn PDF document text
    • http://vomuseteweto.pbworks.com/w/file/fetch/144833052/89123511200.pdfIn PDF document text
    • http://pajawazo.pbworks.com/f/how_do_you_calculate_yield_per_acre.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa78ff55-638b-4f34-90ff-04ea26a102e5/atividades_com_preposio_para_o_7o_ano_com_gabarito.pdfIn PDF document text
    • http://bunemirudezo.pbworks.com/w/file/fetch/144672939/wobewizefenosaxivonaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4041ed0-4ad9-4071-a1ee-dfa450510781/autocad_drawing_viewer_for_mac.pdfIn PDF document text
    • http://gutogupaxaz.pbworks.com/w/file/fetch/144820731/nba_live_mobile_hack_apk_no_human_verification.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d27d0b6-9340-4ead-9997-dbc3a8004ac4/how_to_change_the_time_on_a_citizen_blue_angels_watch.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_off0000f740.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF740 5264 bytes
SHA-256: 786c4a795e4a79c6894e7b7f24655f2a02fb8ae32f70d49db1f95c9cb3633d75
font_01_sfnt_off00010918.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10918 12176 bytes
SHA-256: 5adf37ee746d8f9c6e9b38a0cff659b628e92f805b29bb6becd0b6d929128ef1