Malicious PDF — malware analysis report

Static analysis result for SHA-256 44be75b0bc911519…

MALICIOUS

PDF

79.3 KB Created: 2021-06-09 17:04:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 844b38111bb9e997f66cf64fbf829a1c SHA-1: 1d893f5161a9e4465026e6c15c58949e6e899eb3 SHA-256: 44be75b0bc91151932dec509cb343eee31f7b1cc0d4a7914d6583ebd65eca4a0
186 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. 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 0.9991

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://crewmak.ru/pbw?utm_term=head+soccer+unblocked PDF link annotation
    • https://rafukamilijodif.weebly.com/uploads/1/3/7/5/137509327/252485.pdfIn PDF document text
    • https://rebijigubewu.weebly.com/uploads/1/3/4/7/134770847/tojegebarujinemif.pdfIn PDF document text
    • https://womonejod.weebly.com/uploads/1/3/2/6/132681039/denatavazi_kinun.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486758/normal_601f1b2424537.pdfIn PDF document text
    • https://xoliguzi.weebly.com/uploads/1/3/4/2/134265359/9f89b30d104.pdfIn PDF document text
    • https://funovupudejo.weebly.com/uploads/1/3/4/4/134473131/xatipizeti.pdfIn PDF document text
    • https://rifodomofakape.weebly.com/uploads/1/3/4/6/134627700/kabovenoneku.pdfIn PDF document text
    • https://vufegolafo.weebly.com/uploads/1/3/0/9/130969987/3d45fa935.pdfIn PDF document text
    • https://feraresafobigim.weebly.com/uploads/1/3/0/8/130813798/wivomijoraw.pdfIn PDF document text
    • https://dexugagemer.weebly.com/uploads/1/3/4/7/134715037/7354147e1dd74d4.pdfIn PDF document text
    • https://batujesidow.weebly.com/uploads/1/3/4/6/134666028/e3b89f863ac455e.pdfIn PDF document text
    • https://ravekenelar.weebly.com/uploads/1/3/4/0/134041687/mumikowix_ritazakaxi_xumaneridotu.pdfIn PDF document text
    • https://gamupizesusaza.weebly.com/uploads/1/3/1/3/131398140/8715494.pdfIn PDF document text
    • https://notokawuwo.weebly.com/uploads/1/3/4/8/134856920/454116b9f.pdfIn PDF document text
    • https://depoferi.weebly.com/uploads/1/3/4/4/134445349/vajepurutinupijil.pdfIn PDF document text
    • https://dixevivoruze.weebly.com/uploads/1/3/1/4/131437918/jitipoposovido.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4494165/normal_60aff59f7b1f4.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://uploads.strikinglycdn.com/files/b04c16a4-1436-4673-808f-310d494b426b/html_css_table_tr_padding.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f0025f4-b938-4372-8b8f-4a98ed6aefb7/johnson_150_fast_strike_fuel_pump.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c78598ff-b661-449e-86a5-7936c8fcb9e3/unicode_character_table_python.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/170cc1c1-f84e-4ae1-8cbf-ceaeb1f40319/mekopojib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b99ce886-09a6-41f7-bdf1-6e46cbd4394e/42974307026.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5F1 4852 bytes
SHA-256: b787cafc75419d1ab9cf2786bf4f9bebbfd32ab5f3df97c075fdc6a165e2e8bb
font_01_sfnt_off0000e668.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE668 10616 bytes
SHA-256: 089b03c1f246dfd844d3a38d6ae8cdeca6f6e4775348e8d44d3fa02c3e00b54d
font_02_sfnt_off00010b23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B23 16440 bytes
SHA-256: af2db46ac878b43d8b0fc7263ce876191594d6d3f70a5077a8bee2ca0b91cfb4
font_03_sfnt_off00012184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12184 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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