Malicious PDF — malware analysis report

Static analysis result for SHA-256 57b2e88082b5771d…

MALICIOUS

PDF

59.5 KB Created: 2020-11-10 23:48:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: e66218b5341eae94e736f2e79f036f68 SHA-1: ca4c36cae76ed918bfe251ccd78e8c4fd1387f57 SHA-256: 57b2e88082b5771d2aab0b9eecae620e4bec4c0afece6e3fc6b6b5ab5e10bed8
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • 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 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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?keyword=pokemon+tv+download In PDF document text
    • https://vixijusodu.weebly.com/uploads/1/3/0/7/130776714/674c86b4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452193/normal_5faa09863f140.pdfIn PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/kaven_lidotobin_robisud_tepefobinijowaf.pdfIn PDF document text
    • https://jigusamimuwu.weebly.com/uploads/1/3/4/4/134435445/tobedapiwudid.pdfIn PDF document text
    • https://berotejenikakoz.weebly.com/uploads/1/3/0/7/130775756/6823633.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390330/normal_5f97fd43801df.pdfIn PDF document text
    • https://luwobidope.weebly.com/uploads/1/3/0/8/130814225/xafube-befonotuge-zibotubujos-seboke.pdfIn PDF document text
    • https://jewajufigojoxi.weebly.com/uploads/1/3/1/4/131438211/devuzitafovo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408582/normal_5fa30604abc9a.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/1ae52131-fb74-409f-9c86-288e0782f4da/ganifixelobuxebe.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/54696615275.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19078ad3-0f07-4bfc-951e-004bd9dc01f7/befizev.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_off0000b0f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0F3 4912 bytes
SHA-256: d53e002fe06e246de3972004593dfcb4c67de795f17a26f825cfab3b613215d8
font_01_sfnt_off0000c1b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1B0 9480 bytes
SHA-256: 1fbf9c82d95a583ae5b45593d7757e315970886d96387f8db655668f8ef5b420