Malicious PDF — malware analysis report

Static analysis result for SHA-256 94eefc118c39a1f0…

MALICIOUS

PDF

77.1 KB Created: 2021-04-15 21:15:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 2a305018e44c48c907f34ba20dc19463 SHA-1: 1ada0d0bdc8c8e8f6ceb1e1086f7295088ebded9 SHA-256: 94eefc118c39a1f0062eda64b0c1f007c1f90fa1a4ee28a63c95a70bc42e6feb
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://soxebez.ru/strik?utm_term=hp+photosmart+d110+series+printer+offline PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4443598/normal_60301b5b898ad.pdfIn PDF document text
    • http://akfb.online/vicks_warm_humidifier_walmarthdhlw.pdfIn PDF document text
    • http://fuxewofuwikafu.iblogger.org/zegurax.pdfIn PDF document text
    • http://nupazoz.22web.org/12287351946.pdfIn PDF document text
    • http://nosinoski.shop/sofewumezagadelipijugs08g.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476281/normal_604e2708d3b8c.pdfIn PDF document text
    • http://dosaxixapaxa.medianewsonline.com/nukusugakid.pdfIn PDF document text
    • http://tixesikixux.mygamesonline.org/webugixepojin.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374843/normal_5fcf521d660d7.pdfIn PDF document text
    • http://kopatizukuxaluj.scienceontheweb.net/international_business_meaning.pdfIn PDF document text
    • http://mokaxizekebade.scienceontheweb.net/cell_fusion_cell_1st_form.pdfIn PDF document text
    • http://kawlites.online/dukifjn17b.pdfIn PDF document text
    • http://lumejaramelu.mygamesonline.org/gaxewazenegamuxatulibeg.pdfIn PDF document text
    • http://fosonelotila.medianewsonline.com/47193507992.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://af18ad75-7652-4b25-b9e0-8da5fded0af1.filesusr.com/ugd/529385_b512a67659e74cb497662afa654c27cd.pdf?index=trueIn PDF document text
    • https://307a23dc-bb60-4906-9a68-69e45957aa19.filesusr.com/ugd/d2057d_88ddb9a0cdd6456ab09d49e7a08d7c60.pdf?index=trueIn PDF document text
    • http://wimofulun.rf.gd/70895313848.pdfIn PDF document text
    • https://091a8774-b5bd-4fb7-8799-8d1ca0ca44ad.filesusr.com/ugd/8716ab_298b38c873874dd69aba92242a05347f.pdf?index=trueIn PDF document text
    • http://wupepiwora.rf.gd/40504119382.pdfIn PDF document text
    • http://bebovufuvuji.myartsonline.com/65085887125.pdfIn PDF document text
    • http://pezamax.myartsonline.com/deepika_malayalam_calendar_2020_free_download.pdfIn PDF document text
    • http://nubirumoxid.onlinewebshop.net/electronics_workbench.pdfIn PDF document text
    • http://guzedero.rf.gd/student_ukulele_chord_chart.pdf.pdfIn PDF document text
    • https://aed022ca-8a9d-452d-9022-56a74a585a14.filesusr.com/ugd/4d548e_117be8cac42e4ed4aeb11acc6042e996.pdf?index=trueIn PDF document text
    • https://21dbc830-6d60-48ad-8ab0-00d2b3cb69e0.filesusr.com/ugd/18d949_936f5e2d8776480dbc2e771b28623a95.pdf?index=trueIn PDF document text
    • http://gixopiv.onlinewebshop.net/lower_back_strain_stretches.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_off0000efc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC9 5436 bytes
SHA-256: c708b5a4b778840f402853046b03fdd5aebd0b4035121e050cd5968b85ee4579
font_01_sfnt_off0001021a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1021A 10768 bytes
SHA-256: 0a9fe977b3f18605138eefab882aecfa13c5eb29cecddc1b6aca8aaf67afa3df

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