Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7ac634bfd16349d…

MALICIOUS

PDF

44.9 KB Created: 2021-02-27 08:14:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 2bc71db0e6ee91b671eaaf833de17c82 SHA-1: 35992d45458b8521711444f83a69b2d4693c420f SHA-256: f7ac634bfd16349d09fbf4e5795f5d06286a04c54aff0ce410fa5a31ed241124
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple embedded URLs and is flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to pool heater maintenance, which is likely a pretext to direct users to malicious links. No scripts were extracted, but the presence of external URIs and the overall detection profile indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7170

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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://leonvi.ru/award?keyword=how+to+reset+my+hayward+pool+heater PDF link annotation
    • https://cdn.sqhk.co/sojejinof/3jih3oo/sadimaronabenameboposisev.pdfIn PDF document text
    • https://gifenatewa.weebly.com/uploads/1/3/4/4/134480542/ac59dc7bae.pdfIn PDF document text
    • https://cdn.sqhk.co/lituxopevuk/rJgiihi/49353357503.pdfIn PDF document text
    • http://dodemul.mygamesonline.org/gadukanivapogunivojiju.pdfIn PDF document text
    • https://paboripiniw.weebly.com/uploads/1/3/0/7/130739049/xonupobujenalix_vadakam.pdfIn PDF document text
    • http://kiritisivasol.mywebcommunity.org/how_to_build_a_weight_bench_out_of_wood.pdfIn PDF document text
    • http://fefiwizam.sportsontheweb.net/what_size_tires_are_on_a_2005_chevy_equinox.pdfIn PDF document text
    • https://fidunisowasewi.weebly.com/uploads/1/3/4/5/134599354/6987975.pdfIn PDF document text
    • http://fagumawegoleleb.mypressonline.com/42903272034.pdfIn PDF document text
    • http://padubarejibuso.rf.gd/74053821641.pdfIn PDF document text
    • http://wirodugapilab.epizy.com/canon_speedlite_600ex-rt_ii.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/watch_dogs_2_live_wallpaper.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/genabejobemisureguku.pdfIn PDF document text
    • http://mulexotuvatago.epizy.com/invite_card_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/defujo/suwukekiwopabolugotubeta.pdfIn PDF document text

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