Malicious PDF — malware analysis report

Static analysis result for SHA-256 138d623046677958…

MALICIOUS

PDF

72.5 KB Created: 2020-11-19 07:30:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d654958051a59dba4ce03b99c0f47611 SHA-1: 7856613c22ab528626c0782165766621d5d6f339 SHA-256: 138d6230466779581177d35be22a134df0b62dda033f5b02adec42d4e7fb2a45
164 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an urgency-based lure. 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 0.9997

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.
  • 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://trafftec.ru/123?utm_term=clean+freak+car+wash+corporate+office PDF link annotation
    • https://xuzelete.weebly.com/uploads/1/3/2/6/132681171/sesoxizujirefuseg.pdfIn PDF document text
    • https://folatidaxewurel.weebly.com/uploads/1/3/4/3/134317863/9c44db8832.pdfIn PDF document text
    • https://febefuso.weebly.com/uploads/1/3/4/3/134382796/tojibujuxekuluwim.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383138/normal_5f962a8fe3317.pdfIn PDF document text
    • https://zarujiwimil.weebly.com/uploads/1/3/4/9/134900424/wizepezovaf-tovuvud-mitibujexaja.pdfIn PDF document text
    • https://kexinebig.weebly.com/uploads/1/3/4/3/134338338/3308273.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/ritoma/kundli_milan_by_name_app.pdfIn PDF document text
    • https://s3.amazonaws.com/vebogotexaf/awesome_tanks_two_cool_math.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e5dd0cf-c003-4938-b183-9690cc06a463/revelation_online_character_presets.pdfIn PDF document text
    • https://s3.amazonaws.com/gajejasa/bajuku.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/online_manual_epson_2750.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_off0000d32e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD32E 5072 bytes
SHA-256: ffab0c0121caf6f4c46a56ce3194d78e66962c5bb88dcb447cf8dad567e698a7
font_01_sfnt_off0000e47a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE47A 10120 bytes
SHA-256: 34512eb54c6b7a3354f9dfad5a2df08baedc92b2ea46cb85e3442b1c87354b37
font_02_sfnt_off00010719.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10719 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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