Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 34cb873fad721731…

MALICIOUS

PDF / .VIR

217.8 KB Created: 2024-03-02 05:54:57 Authoring application: Pdftk First seen: 2024-05-27
MD5: 5a45143651a4e4894398750babe2314b SHA-1: b4b6477e6815d25677d5c8e5e40e5ee5e28c5a43 SHA-256: 34cb873fad7217319a1886a7abffc9cd337f5fc0a633d0366c00a948dd1d85e2
184 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.1450

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 2 image(s), only 0 text block(s), carries a click-outward action, and is only 217 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • Image-only PDF lure with a single link to a non-reputable host medium PDF_IMAGE_LURE_NONREPUTABLE_LINK
    PDF is image-heavy with little real text and its only clickable action is a single external link to a host that is not known-good. This is the canonical malspam carrier shape — a screenshot-like 'click to view' page whose sole purpose is to funnel the victim to one redirect/landing URL on a compromised or throwaway domain. Flagged suspicious rather than malicious because the link alone (no shortener / typosquat / brand path) is the only corroborator beyond the image lure.
  • 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://geziwulobel.ragaz.co.za/47174177323907411936954655?dupamemipigobepanejanimowajelaxavijoregetitilonij=nejebejizemumesipegovoboxuditizudasadimetofojupeseterakosokezodivixejamizatadulululuvagerufesubagewujovisevafujekimasamadamivufojupuvizemadilowogonivuwavinuderubusukukerisesekomirulonorelutegifevenutafexamifo&utm_kwd=worksheet+in+asl&konevutusokisusukefejedorisuvo=sagetonizazolumutijikutinabujidoneguvemifugasutaduxukajagadisudevuxujimofuwusikerutafazixevuwisixusafetugobakujelukagipukuvasitox In PDF document text
    • https://ppid.untan.ac.id/download/?id_jenis=1&id=570&url=https://parlab.eecs.berkeley.edu/sites/all/libraries/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://zolivanodebu.club-directory.com/f/826009105In PDF document text
    • https://geziwulobel.ragaz.co.za/47174177323907411936954655?dupamemipigobepanejanimowajelaxavijoregetitilonij=nejebejizemumesipegovoboxuditizudasadimetofojupeseterakosokezodivixejamizatadulululuvagerufesubagewujovisevafujekimasamadamivufojupuvizemadilowogonivuwavinuderubusukukerisesekomirulonorelutegIn PDF document text
    • https://geziwulobel.ragaz.co.za/47174177323907411936954655?dupamemipigobepanejanimowajelaxavijoregetitilonij=nejebejizemumesipegovoboxuditizudasadimetofojupeseterakosokezodivixejamizatadulululuvagerufesubagewujovisevafujekimasamadamivufojupuvizemadilowogonivuwavinuderubusukukerisesekomirulonorelutegifevenutafexamifo&utm_kwd=worksheet+in+asl&konevutusokisusukefejedorisuvo=sagetonizazolumutijikutinabujidoneguvemifugasutaduxukajagadisudevuxujimofuwusikerutafazixevuwisixusafetugobakujelukagipukuvasiIn 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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off0003265d.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0003265d.bin)
🗂 Part of campaign: shared payload a02f67deb0 41 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003265d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3265D 8940 bytes
SHA-256: a02f67deb084b7ce8e02d7004994a9dd7e3132fe24919a42c6f0df6ed367c188
font_01_sfnt_off00033871.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33871 13460 bytes
SHA-256: b24a98a4d46893bfdfabbc029ee78bfe36b7af4905f9199e1270dc614d744ee1