Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ab8da85a4685ece…

MALICIOUS

PDF

82.7 KB Created: 2021-03-03 00:05:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 7aae60bff6cb8fef63064462d694b7cf SHA-1: 7def0a177ce519024a6495df506f9fa5e14a6155 SHA-256: 8ab8da85a4685ece2e873409a9b94937eee5f4c390d053a229647f264c21166b
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable hosting services and are likely part of a link farm designed to redirect users. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and the ClamAV detection 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0' strongly indicate a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains a query related to 'planet fitness contracts', suggesting a lure to trick users into visiting malicious sites.

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://golowaki.ru/strik?utm_term=do+planet+fitness+have+contracts PDF link annotation
    • https://wixevilit.weebly.com/uploads/1/3/4/8/134873569/7467227.pdfIn PDF document text
    • http://revilokepudidu.mygamesonline.org/27635327129.pdfIn PDF document text
    • http://nexofozupugasi.mywebcommunity.org/gusiw.pdfIn PDF document text
    • https://widosutolitidaf.weebly.com/uploads/1/3/4/8/134847614/xujesa_wuxuxokixoz_degexovas.pdfIn PDF document text
    • https://dafelubuvotaxid.weebly.com/uploads/1/3/4/7/134753950/mupaw_kaluzitifoxufu.pdfIn PDF document text
    • http://jekefidaz.mygamesonline.org/kalefidewuxozibor.pdfIn PDF document text
    • http://pefiworawodud.mypressonline.com/37611174146.pdfIn PDF document text
    • https://cdn.sqhk.co/zizenozi/gjjePeU/86382405340.pdfIn PDF document text
    • https://cdn.sqhk.co/wizevomorofe/iiahdYK/10238021038.pdfIn PDF document text
    • https://cdn.sqhk.co/gorokipo/cjiDghd/61023660001.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxozowaki/B9gg8hc/4710929659.pdfIn PDF document text
    • https://wejatinolu.weebly.com/uploads/1/3/1/4/131438249/kigaganezevotij.pdfIn PDF document text
    • http://xoziduso.mypressonline.com/audacity_of_hope_quotes.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
    • http://gubadif.myartsonline.com/myers_briggs_test_infj.pdfIn PDF document text
    • https://s3.amazonaws.com/difigomisosak/final_fantasy_vii_condor_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/cadbury_dairy_milk_ad_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/xigujimafedum.pdfIn PDF document text
    • https://s3.amazonaws.com/nupotukig/2069976609.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_off0000f83c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF83C 4948 bytes
SHA-256: 6aa712aa2f122af44cef20e4f3cd1fa61467fc7d407001b7467b5cca448791f1
font_01_sfnt_off0001090f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1090F 11424 bytes
SHA-256: 50237814226c830689507b0b0305d06325ee1aaeaf32252109e804e23758cb32
font_02_sfnt_off00012f9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F9C 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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