Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f14a6e03eefdb2e…

MALICIOUS

PDF

78.6 KB Created: 2021-03-14 04:28:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 2b3c125a5f7b1fb3440ce93b75cf5760 SHA-1: d74a5a5bf2c944c109d054c5757d2eae5038dd50 SHA-256: 8f14a6e03eefdb2eabf88da83b8a1b959a6e355d2340a6528d531c233dea3f52
186 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many hosted on disposable or free domains, suggesting a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jumiwimov.ru/wix?keyword=san+francisco+peninsula+energy+services PDF link annotation
    • https://gigufeti.weebly.com/uploads/1/3/4/6/134633464/2427185.pdfIn PDF document text
    • https://wetolobumusu.weebly.com/uploads/1/3/4/5/134579125/2a56e5f94bc8.pdfIn PDF document text
    • https://nipetetoxijekuj.weebly.com/uploads/1/3/4/7/134718304/24e9fb2637f.pdfIn PDF document text
    • https://betamomaj.weebly.com/uploads/1/3/2/6/132695924/9766327.pdfIn PDF document text
    • https://bavopasivivewid.weebly.com/uploads/1/3/0/7/130738836/d87ddf5c.pdfIn PDF document text
    • https://jujipepovoduvu.weebly.com/uploads/1/3/4/0/134017188/bulumadotanilikega.pdfIn PDF document text
    • https://ritipovilij.weebly.com/uploads/1/3/4/6/134650849/4771228.pdfIn PDF document text
    • https://fanawilixu.weebly.com/uploads/1/3/1/4/131408209/sodezutopega.pdfIn PDF document text
    • https://fegovelusilefu.weebly.com/uploads/1/3/5/3/135330230/8197101.pdfIn PDF document text
    • https://losebevaxefot.weebly.com/uploads/1/3/5/3/135347065/47c4e833ad62571.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://febinobe.epizy.com/smok_alien_220w_instruction_manual.pdfIn PDF document text
    • http://zilajib.epizy.com/7015714898.pdfIn PDF document text
    • http://sosagid.epizy.com/adobe_audition_1._5_user_manual.pdfIn PDF document text
    • http://gafomawonerif.rf.gd/66318247575.pdfIn PDF document text
    • http://jigosip.epizy.com/optex_bx-_80n_manual.pdfIn PDF document text
    • http://mojelol.epizy.com/anthem_blue_cross_maine_prior_authorization_form.pdfIn PDF document text
    • http://xozelabudizi.epizy.com/infrastructure_australia_business_case_template.pdfIn PDF document text
    • http://goxulotevixoda.rf.gd/41077464005.pdfIn PDF document text
    • http://xetulugesoboko.epizy.com/dominoes_games_online_free.pdfIn PDF document text
    • http://jirufemen.epizy.com/zoxonevenowidodapov.pdfIn PDF document text
    • http://xokofenox.epizy.com/30367211003.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_off0000f447.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF447 5448 bytes
SHA-256: 022c72959a515c4f8f92e03f3794d78c15dafbe9b1d93d8ad35c5e5230c58203
font_01_sfnt_off000106f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106F2 11228 bytes
SHA-256: a6c7b6e4d29d5351ae02588d03ab9d409885b0636822a535d30ea7ab4ff868db

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