Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 3d7b2a314675bff0…

MALICIOUS

PDF / .VIR

339.6 KB Created: 2023-04-16 18:31:31 Authoring application: pdf-parser First seen: 2024-11-21
MD5: 010fade0ebd8c538e317b157d3e8bb61 SHA-1: 44c7ccb07092e0d3590e9321cd8cfea20b8686e1 SHA-256: 3d7b2a314675bff0cecd60cba5372edfed59b45fd65dcd6b554b962b9476d8d6
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7527

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.
  • 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.
  • 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.
  • 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://der-schl-ssel-zur-selbstbefreiung-pdf.kmcgphoto.com/wifinoj.pdf In PDF document text
    • https://a-handbook-of-critical-approaches-to-literature-3rd-edition-pdf.milliwaysconsulting.net/35174158047.pdfIn PDF document text
    • https://pejusuxujej.norin.co.za/68145799649224059076825488?zirotigotekowavekexisizomemefudufopezodumoxabukekozitotenepa=guzafafuzezirixaropawuwafuloboruvexuwajowapolivesufobiwelipikuxukipapejokiwurizozijulegaremubagibajakapixunizerafixujigefimuzilerutuxekexujoxeremokulepuribujitaduzonojolumefurelijabofidikodebubomizalux&utm_term=no+hay+dios+tan+grande+como+tu&lazotanizapajunerigekufexirisobarifipesagofigap=jekaxudodetezagumusugerinanowanejilurapobivekuxarejifezosivosubirorobawakoxivasaxiramepojijivuvejoxodimogovanuIn PDF document text
    • https://pejusuxujej.norin.co.za/68145799649224059076825488?zirotigotekowavekexisizomemefudufopezodumoxabukekozitotenepa=guzafafuzezirixaropawuwafuloboruvexuwajowapolivesufobiwelipikuxukipapejokiwurizozijulegaremubagibajakapixunizerafixujigefimuzilerutuxekexujoxeremokulepuribujitaduzonojolumefurelijaPDF link annotation
    • https://pejusuxujej.norin.co.za/68145799649224059076825488?zirotigotekowavekexisizomemefudufopezodumoxabukekozitotenepa=guzafafuzezirixaropawuwafuloboruvexuwajowapolivesufobiwelipikuxukipapejokiwurizozijulegaremubagibajakapixunizerafixujigefimuzilerutuxekexujoxeremokulepuribujitaduzonojolumefurelijabofidikodebubomizalux&utm_term=no+hay+dios+tan+grande+como+tu&lazotanizapajunerigekufexirisobarifipesagofigap=jekaxudodetezagumusugerinanowanejilurapobivekuxarejifezosivosubirorobawakoxivasaxiramepojiPDF link annotation
    • https://img1.wsimg.com/blobby/go/ea2440c4-0589-4987-a287-5222ac2bee25/downloads/lajabufuvir.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/486d2eb6-c8ff-4ee1-b395-70cda2229d69/downloads/97305716721.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/9167459b-90f9-47d6-8a46-47a4c9d4de25/downloads/tegotogelubetuwak.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/1bbae734-0339-4061-8860-47507a6bfc5c/downloads/39163699403.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/486d2eb6-c8ff-4ee1-b395-70cda2229d69/downloads/74531584662.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/a6f72272-33fd-411c-bcf3-a41ce870240d/downloads/70129874951.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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off0004fc17.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004fc17.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004fc17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FC17 15624 bytes
SHA-256: dd32fe0419290320ea666510a7ffd2c5fc6f268f14240f2293ecc30c1c0f9549
font_01_sfnt_off000522ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x522AE 11956 bytes
SHA-256: 4bc39faa1ea2db8833c825e4efc3b2574f8d557c758c3768a514ffd89221f9a8