Malicious PDF — malware analysis report

Static analysis result for SHA-256 7144aba8434a3700…

MALICIOUS

PDF

75.1 KB Created: 2021-04-19 23:26:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 03d588798f9caca2b6fd37da5964f6d4 SHA-1: 32c44a7275d3e8076eec0cd04492d9291c6f0225 SHA-256: 7144aba8434a370069d5755cbfdbb1318434ce4b361d0572a39cacf8438269b3
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The presence of an embedded URI pointing to 'jottigo.ru' suggests a phishing or redirection attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing lure, likely designed to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jottigo.ru/strik?utm_term=clicker+garage+keypad+programming PDF link annotation
    • https://cdn.sqhk.co/gaxudofexal/dgjjajd/kz_offset_flashlight_mount.pdfIn PDF document text
    • http://vexetifiridik.mypressonline.com/chicco_keyfit_30_stroller_car_seat_combo.pdfIn PDF document text
    • http://lyudi23.ru/wajugarovugagupuxafiralnarz1.pdfIn PDF document text
    • https://cdn.sqhk.co/rekubapapup/d75hfRW/radio_rock_en_espanol_argentina.pdfIn PDF document text
    • https://cdn.sqhk.co/dudokirabog/ichgUih/86214319470.pdfIn PDF document text
    • http://pilinopumewaza.mywebcommunity.org/viminafugexurefipufu.pdfIn PDF document text
    • http://kidiwutimako.mygamesonline.org/77922668488.pdfIn PDF document text
    • http://usesalle.xyz/978105421996jco4.pdfIn PDF document text
    • https://cdn.sqhk.co/guwewaxa/YvYj6dC/xisetopuvof.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/wixanarer/milton_areopagitica.pdfIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/10227193920.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/abbreviations_of_computer.pdfIn PDF document text
    • http://pasulupumorowim.myartsonline.com/introduction_to_aerospace_engineering_textbook.pdfIn PDF document text
    • http://vovojoj.atwebpages.com/200_gramos_de_harina_a_ml.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxexi/dugupozugo.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_off0000e853.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE853 5284 bytes
SHA-256: e92fbc8afb6d57d3df7ac63395f1c2abab2ef285553bada75270d79b6daf19b0
font_01_sfnt_off0000fa45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA45 10884 bytes
SHA-256: 46e9f71644dd60d821d16ff966ab78e6eb2ac3cf2cfb58856bb06784802f41f6