Malicious PDF — malware analysis report

Static analysis result for SHA-256 32fa9e6cd5125fbd…

MALICIOUS

PDF

43.2 KB Created: 2020-10-29 03:12:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-19
MD5: 5e18363168af58399b46fe4e1fb058a3 SHA-1: 578a3a8e67eed32eab57873f424932e126d79807 SHA-256: 32fa9e6cd5125fbd262b6ba7dea3ff7c704089052861a6fbe14fdfecba1aec91
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 43 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://ttraff.me/123?keyword=weightlifting+percentages+chart In PDF document text
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/9978502.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370280/normal_5f924843831b6.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/e9ff54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370056/normal_5f8ef988a6e34.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368762/normal_5f8c7b540e2d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381964/normal_5f8b6eafb7943.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379606/normal_5f91fe7f76553.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382196/normal_5f8d93bd6708f.pdfIn PDF document text
    • https://vivazezege.weebly.com/uploads/1/3/4/0/134041722/2462831.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369775/normal_5f87e19a22c61.pdfIn PDF document text
    • https://detosujedeke.weebly.com/uploads/1/3/4/3/134371576/musiwetuzovexege.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365547/normal_5f8734d9e5eeb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425912/normal_5f9a01248bc1c.pdfIn PDF document text
    • https://soxupewo.weebly.com/uploads/1/3/4/3/134392520/vujerinezale_rubizavos_luzexubaxef_jidafefiwuj.pdfIn PDF document text
    • https://povutepumik.weebly.com/uploads/1/3/2/7/132741486/4952957.pdfIn PDF document text
    • https://feleluxotikuko.weebly.com/uploads/1/3/4/3/134338959/zijifulowoj-subep-xezoruwo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365575/normal_5f8c1a88bb1f2.pdfIn PDF document text
    • https://subulutug.weebly.com/uploads/1/3/4/3/134349811/xotowizezarakupogin.pdfIn PDF document text
    • https://goneludolazoga.weebly.com/uploads/1/3/4/4/134488647/4319237.pdfIn PDF document text
    • https://wazijewafaset.weebly.com/uploads/1/3/4/4/134437152/56a2d92bc6e.pdfIn PDF document text
    • https://sedidumorasu.weebly.com/uploads/1/3/4/5/134507492/acd1236b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416500/normal_5f961c2793e60.pdfIn PDF document text
    • https://jubunukaf.weebly.com/uploads/1/3/1/4/131483214/3820341.pdfIn PDF document text
    • https://pejifivoriruruk.weebly.com/uploads/1/3/4/3/134314693/zuxafujamidej.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off000071e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71E8 5288 bytes
SHA-256: d3b9471f144ee82c8791955438b036d7b59a98bd261db95d1518cfca42a9128f
font_01_sfnt_off000083f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83F8 7848 bytes
SHA-256: 8ceb67c26ab38761ddd8e94b2bd17f69aa10c4bec9a3184046bc66a461d50e5e