Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7dd46f6a9186daa…

MALICIOUS

PDF

76.3 KB Created: 2021-02-13 11:46:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 758bfd71173552e052da3aa14cd08d4e SHA-1: aa2fcd817b13c4e0f47493e74206c17536696771 SHA-256: f7dd46f6a9186daae87a7405cd4b90021c96fa1897bf07d4fbb2d8e708b6d47b
194 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by a machine learning classifier and ClamAV. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The 'Amazon music to my phone' lure, combined with the numerous external links, indicates an attempt to direct users to malicious websites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://baarspo.ru/aws?utm_term=amazon+music+to+my+phone PDF link annotation
    • https://cdn.sqhk.co/senosekagoko/fjfZthy/vokosigiverelisowipiku.pdfIn PDF document text
    • https://gusoberususot.weebly.com/uploads/1/3/1/4/131454899/d83073baf19b.pdfIn PDF document text
    • https://wedutigumufezeb.weebly.com/uploads/1/3/4/6/134659425/banepepuwuxizet.pdfIn PDF document text
    • https://woduluzotuni.weebly.com/uploads/1/3/4/3/134373450/fd87d4df.pdfIn PDF document text
    • https://zogowejodumuf.weebly.com/uploads/1/3/0/7/130775171/ceb16a8.pdfIn PDF document text
    • https://vazexisosumufil.weebly.com/uploads/1/3/4/4/134465451/komotisivut.pdfIn PDF document text
    • http://mafonofolifeda.22web.org/berne_convention_1971.pdfIn PDF document text
    • https://tafanoxuxirugo.weebly.com/uploads/1/3/5/3/135327873/luwexab.pdfIn PDF document text
    • https://womomoko.weebly.com/uploads/1/3/4/8/134848640/wuralegarobaremupe.pdfIn PDF document text
    • https://guvopizap.weebly.com/uploads/1/3/0/7/130776702/a01f631dde39be.pdfIn PDF document text
    • https://cdn.sqhk.co/tajixixejafi/ggGogjf/malitabudajigufavarovez.pdfIn PDF document text
    • https://cdn.sqhk.co/nowovadizeb/ojdcBhc/zibukererilodajovivudubut.pdfIn PDF document text
    • https://tuzutetenufiro.weebly.com/uploads/1/3/4/7/134716615/68359a3bb6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zuxime/97703644688.pdfIn PDF document text
    • https://s3.amazonaws.com/kodipopujufipig/2161244535.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/brawl_stars_ios_ipa.pdfIn PDF document text
    • http://sonevovavar.rf.gd/jafemipugomiwazowosi.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_off0000e131.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE131 5068 bytes
SHA-256: 81490a61ca8110b58f9d4d5af4cd7491166212979cd127d769bd6b94e020e955
font_01_sfnt_off0000f250.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF250 10340 bytes
SHA-256: 049fd56b6bc039848635b1a1a182d238fe01907af91f8aa79de86afc2afab318
font_02_sfnt_off000115ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115AB 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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