Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf7a03695a108747…

MALICIOUS

PDF

77.0 KB Created: 2021-03-27 19:47:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: f5c0d4079e48bf8e5986c9fe8ebac176 SHA-1: 7f3657f9ea363b3587d6a0d3f8a996b2718a80ac SHA-256: cf7a03695a108747a4138de864f9ee12cde2c6075a219baca8498e20317fee08
136 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a phishing lure, specifically using an accounting-related topic to entice clicks. The embedded link redirects to a suspicious URL, likely leading to a phishing site. No scripts were extracted, but the PDF structure and URL reputation strongly suggest a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://xajibur.ru/strik?utm_term=what+is+the+meaning+of+prepaid+expenses+in+accounting PDF link annotation
    • https://lenukanaferu.weebly.com/uploads/1/3/0/8/130873899/panofafep-vexoxoloja-kagusovafasumej.pdfIn PDF document text
    • http://bluebadgeapproval.com/dayton_gas_heater_pilot_lightu9057.pdfIn PDF document text
    • https://xedaliwim.weebly.com/uploads/1/3/1/4/131454603/3555490.pdfIn PDF document text
    • https://wenilitedosi.weebly.com/uploads/1/3/4/3/134315728/2b72e12f4e8.pdfIn PDF document text
    • http://tamowigaxijatot.66ghz.com/biology_10th_book.pdfIn PDF document text
    • http://opensalon.xyz/clash_royale_latest_update_apk2wcjm.pdfIn PDF document text
    • https://kuvijoxujav.weebly.com/uploads/1/3/4/2/134266993/f73c9e.pdfIn PDF document text
    • http://sallely.xyz/banakisopufeozcb.pdfIn PDF document text
    • http://zivufomureko.22web.org/bajedanewoj.pdfIn PDF document text
    • https://sipelebe.weebly.com/uploads/1/3/4/3/134312525/kaliret.pdfIn PDF document text
    • http://aov.one/dewalt_12_inch_chop_saw_with_standqlkj2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/midizaxopazeji/volewezuturuzipofawuzibe.pdfIn PDF document text
    • https://s3.amazonaws.com/divelatoxa/pusawimeralutikevisud.pdfIn PDF document text
    • https://s3.amazonaws.com/zuvovoxigumuz/gopafawuwamirewezuve.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/langrisser_mobile_dragon_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/18701124770.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/joruxagafufoxezez.pdfIn PDF document text
    • http://sasozazanixe.epizy.com/spy_training_camp_uk.pdfIn PDF document text
    • http://jijabivu.epizy.com/perawisuvesa.pdfIn PDF document text
    • http://fegozewusesib.rf.gd/admission_test_question_bank.pdfIn PDF document text
    • https://s3.amazonaws.com/jopomodilamego/wunodepebuwapugi.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC93 5616 bytes
SHA-256: cc102e39d97ee046dbb0dee085fc1d23d982042f27213f2069b50100c3779075
font_01_sfnt_off0000ff97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF97 11344 bytes
SHA-256: 14f5e449a7bdfd90d02f506ef5948a2ea9e20c892e5fcd858ea4296e30485e69

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