Malicious PDF — malware analysis report

Static analysis result for SHA-256 a936062c5389c761…

MALICIOUS

PDF

45.6 KB Created: 2020-10-25 14:13:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 0130cfa8b45b496ad32377630ce4cdc0 SHA-1: 2ae9c71c7b774254e09e642056df593886b291ec SHA-256: a936062c5389c761c2ac99a442c09dbc0db2d7f53a5d82a2b96ea0c357812086
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one specifically identified as a malicious redirector. The document body, though partially corrupted, contains text referencing 'Sims 4 more club members' and a URL that likely serves as the initial lure. The presence of numerous external PDF links suggests a link farm or redirection strategy to obscure the ultimate malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ggtraff.ru/strik?keyword=sims+4+more+club+members In PDF document text
    • https://xibogunef.weebly.com/uploads/1/3/1/3/131398295/gamejuwu-zajonadupujowiv-jexegewetixinib.pdfIn PDF document text
    • https://kiseridebajesa.weebly.com/uploads/1/3/1/4/131408791/5198368.pdfIn PDF document text
    • https://viweposedijul.weebly.com/uploads/1/3/1/0/131070314/fafusimadila_bewekuseb_zotudefubitos.pdfIn PDF document text
    • https://sijevunima.weebly.com/uploads/1/3/1/8/131859613/wurogerapo-vadasetabumara-zited-jusinonekuzuva.pdfIn PDF document text
    • https://beperiguvo.weebly.com/uploads/1/3/4/3/134320750/db366936897f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8d27031-bb24-4981-a07f-7121fd4f46ad/gonakibe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25faf046-2060-41c3-8b62-6b074c402739/89495442637.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d823ce94-677f-4d9c-b7f3-ab71ccbb9704/14358289126.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ea58d75-9030-4dc2-a442-25a81ad92128/69971888606.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/xabapajudawijil.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/angulos_complementarios_ejercicios_resueltos.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/20443141605.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/92906265493.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/mp3_bangla_book_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/jebuvafumopukuv.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/62854507472.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/23284786811.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe832e1a-d62c-410a-8f49-0dc613597241/fabevusikumej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffa98b54-7780-465a-beac-4969b9f4e130/tejoko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c683698-2659-42db-b986-8c6909578569/jizivugimomexumufu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03f2a1ea-e3b8-47bf-84ab-4c852f94fda6/cathay_pacific_darbinieku_ceoanas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6f70b0f-2f12-4a08-8f29-20389367dd62/70976123327.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11f394ff-6c81-4d60-9b70-76531fd846e9/libukajenivonebula.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc2768d7-e9ac-45c6-ab3b-7efb65238824/42445227573.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_off00007080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7080 5064 bytes
SHA-256: ec5fb02212d5226cd26e843b92aeaf3d0a92461fbc835bd3da8068d705bd2a9c
font_01_sfnt_off0000819e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x819E 12484 bytes
SHA-256: 1d4c68691247891a58b42a220a8f092e49e98a5db154956d0a769e9f05ec2cc8

Open this report in the interactive analyzer, or submit your own file for analysis.