Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f5c21241e581036…

MALICIOUS

PDF

71.6 KB Created: 2021-01-23 19:33:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 4c2e134f4fd959a4fb82880c4209dacb SHA-1: 5590b9bcf98d5ef1e234f9b681ed481640dded07 SHA-256: 8f5c21241e581036beedf86b78fcff1cfb3accf02c2c8ac0c3011e0cd940568c
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that mimics a search result, likely intended to trick the user into visiting a malicious site. ML and ClamAV heuristics strongly indicate malicious intent, classifying it as a phishing trojan. No scripts were extracted, but the presence of an external URI and the document's structure suggest a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://traffking.ru/123?utm_term=dog+harness+petsmart+kong PDF link annotation
    • https://site-1174356.mozfiles.com/files/1174356/device_care_android.pdfIn PDF document text
    • https://site-1167925.mozfiles.com/files/1167925/fps_zombie_fury_diary_guns_dead_actions.pdfIn PDF document text
    • https://site-1197825.mozfiles.com/files/1197825/54494061017.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sivopob.epizy.com/vidijewisaliduxibewexele.pdfIn PDF document text
    • http://ravesezubepad.epizy.com/error_on_credit_report_clearscore.pdfIn PDF document text
    • https://s3.amazonaws.com/liwara/68632207445.pdfIn PDF document text
    • http://xugidujesu.epizy.com/xsplit_full_crack.pdfIn PDF document text
    • http://nenimon.epizy.com/transformers_1_bumblebee_changes_car.pdfIn PDF document text
    • http://dojeranorered.epizy.com/72980492843.pdfIn PDF document text
    • http://sotemapepuko.epizy.com/72105103838.pdfIn PDF document text
    • http://kofukobekageja.epizy.com/57674890583.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/xatozesovobagone.pdfIn PDF document text
    • http://zujitix.epizy.com/chahat_video_song_full_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/cheran_pandiyan_movie_isaimini.pdfIn PDF document text
    • http://gagisejokunego.rf.gd/minodovodiwazizo.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/nefafusitugiziledu.pdfIn PDF document text
    • http://nipesuvaz.epizy.com/the_chipmunk_song_piano_sheet_music_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuzo/chrome_on_my_mac.pdfIn PDF document text
    • http://fobupozomorefiw.epizy.com/evs_report_card_comments_for_grade_3.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_off0000dac5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC5 5264 bytes
SHA-256: 0d9c2b0119dd142ffc919f70a75c1ae31513de5a139186e0bfa0d1eb9b98e559
font_01_sfnt_off0000ec8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC8A 10864 bytes
SHA-256: 9371b7b3fa87e305e780190183bc9a73395888d2aa7f4ba00dc72db6d938698c

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