Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b54e00f0c01cdf7…

MALICIOUS

PDF

65.5 KB Created: 2021-02-19 02:57:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: d17b9bb8e0b233d5bd31681151257238 SHA-1: 098dbde25f95edc025090b1ce4d97164ecdd16e6 SHA-256: 2b54e00f0c01cdf7952970f2b187bf6a6593baec16b727858236e6e65252fcef
244 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to disposable domains and redirectors, indicating a link farm or phishing campaign. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan. The embedded URLs suggest an attempt to redirect users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/123?utm_term=how+to+use+ihip+speaker In PDF document text
    • https://cdn.sqhk.co/moromasi/gj4hhgi/beach_buggy_race_2.pdfIn PDF document text
    • http://pannochki-art.com/287578494664pk1k.pdfIn PDF document text
    • http://sibuvre.com/wimuwunetuxevagfp9v.pdfIn PDF document text
    • https://cdn.sqhk.co/tebefaravuz/jj0xhgd/53754967388.pdfIn PDF document text
    • http://vabodulesofife.22web.org/natekakopifuvasinof.pdfIn PDF document text
    • https://dugezuwodovapa.weebly.com/uploads/1/3/0/8/130874298/tudaxekolikuv.pdfIn PDF document text
    • https://cdn.sqhk.co/wozovege/wbidjib/nezaxuburodimazo.pdfIn PDF document text
    • https://cdn.sqhk.co/tedalome/iiaiijb/emergency_vet_clinic.pdfIn PDF document text
    • http://dubiniba.iblogger.org/luzufutap.pdfIn PDF document text
    • http://yourbigdick.space/73685647417mrz8i.pdfIn PDF document text
    • https://cdn.sqhk.co/xovujiroveg/dIgenij/texileb.pdfIn PDF document text
    • http://jabodaligononu.iblogger.org/jurnal_konsep_pendidikan_islam.pdfIn PDF document text
    • http://espaceabonne.com/43269016187lgd70.pdfIn PDF document text
    • https://cdn.sqhk.co/rinezodoniga/hvPgeje/xisufolabevorokozulokat.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://folilef.rf.gd/besharam_full_movie_free_720p_bluray.pdfIn PDF document text
    • http://bunetexugefu.rf.gd/transformers_animated_prowl_x_oc_fanfiction.pdfIn PDF document text
    • http://lefamuredemupi.epizy.com/wayne_dyer_the_shift.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_off0000c2d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2D6 4992 bytes
SHA-256: d61b00c9683c117d65ad53cc0a7964e7a6dce215c9bd89fb596797c36cad13ae
font_01_sfnt_off0000d3d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3D7 10884 bytes
SHA-256: 685a7b0ac82cd7ec49653c25472402c7f2c6510653e5f7214fa1404446ff8651

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