Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c6060c85de85451…

MALICIOUS

PDF

83.5 KB Created: 2021-05-30 04:02:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f46e3c958a237256eaeebcd1798bc39b SHA-1: c2730d11610be3a843717e60a47839ac97979690 SHA-256: 7c6060c85de854518cfe9d6741870606ec6c746520b159338c63108b4de7b4ae
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 0.9998

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://maypoin.ru/strik?utm_term=academic+calendar+template+2020-21 PDF link annotation
    • https://kenomipijisax.weebly.com/uploads/1/3/3/9/133986884/renarukumopaxi-junuzofavexoje-wisoxuligim-lelosopemeperem.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417119/normal_5fc893ee5b0b1.pdfIn PDF document text
    • https://bojotipawotos.weebly.com/uploads/1/3/2/6/132681617/sineritejaragi_kitijore_xejewexo_bosokuf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382965/normal_5fdc40d0c9230.pdfIn PDF document text
    • https://duxuremi.weebly.com/uploads/1/3/4/6/134623812/jadez.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417675/normal_5ff84504266f0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427093/normal_5ff8fbcdd8d76.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458614/normal_5fee80b3595cb.pdfIn PDF document text
    • https://sazotavivi.weebly.com/uploads/1/3/1/1/131164406/deecbf0d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479441/normal_5fffa84c3b344.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365660/normal_60639de0dd5de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500893/normal_5fd31001b7560.pdfIn PDF document text
    • https://fumasidabufip.weebly.com/uploads/1/3/0/7/130775820/petitonolubozazuk.pdfIn PDF document text
    • https://pudafeborebe.weebly.com/uploads/1/3/4/3/134335494/muxojomofitedufut.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb22cd56-a30b-4eee-ab30-66616c5ab4d8/47427116095.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c6007c2-0449-47f2-b21c-f11c511ac3ba/xavivojirawinexoke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98861737-c5fb-492c-ab18-bdc91021beae/lobivinudoworijurodew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0feeea8-ff80-43ff-bf15-871a81a27a8c/excel_vba_msgbox_more_lines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb7ecbee-4440-49c2-abf2-9abb54b6a669/troy_bilt_tiller_repair_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb900187-63cf-4609-8eab-39e7ecacda79/lego_titanic_guide.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000107b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107B7 5388 bytes
SHA-256: d2a049a6c6aeffe68b13375fa727d74da9035aefde8c14493fd1c2ef10f4550d
font_01_sfnt_off000119ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119FF 11420 bytes
SHA-256: bc308df73de8f99ee7f00be8e0e95ab4b2be3757719aa380d2cdbfb751651c81

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