Malicious PDF — malware analysis report

Static analysis result for SHA-256 375675b0e16e2389…

MALICIOUS

PDF

45.1 KB Created: 2020-10-15 09:27:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 330205a3a897eec350b63425bbe2936e SHA-1: e52872e8c266a2e597bae52fae2c1a62f18dc6d5 SHA-256: 375675b0e16e23896df0f166bc02025e9072ed8267d31cdc7eab77d9dfd1a757
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://ttraff.club/pify?keyword=video+maker+apps+for+android In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368245/normal_5f876f48d2ec5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366017/normal_5f86fea4663fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367624/normal_5f8767f4f1248.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367912/normal_5f87adb943616.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365655/normal_5f874b0c39ba8.pdfIn PDF document text
    • https://site-1041932.mozfiles.com/files/1041932/vevilizuzipofibopepoxi.pdfIn PDF document text
    • https://site-1048206.mozfiles.com/files/1048206/3401660465.pdfIn PDF document text
    • https://site-1042602.mozfiles.com/files/1042602/fepatosi.pdfIn PDF document text
    • https://site-1044498.mozfiles.com/files/1044498/wasofovelatukitekori.pdfIn PDF document text
    • https://site-1039133.mozfiles.com/files/1039133/72577881456.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366003/normal_5f8720a3b8118.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367303/normal_5f874f77a33d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369626/normal_5f87e39a2dcdc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369146/normal_5f87a34b8e8fd.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/velowo_dakemolaku.pdfIn PDF document text
    • https://vopevejefed.weebly.com/uploads/1/3/1/6/131606133/7049741.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/devuxupujikeninaferi.pdfIn PDF document text
    • https://dotofinadi.weebly.com/uploads/1/3/0/7/130740455/lefedoninezimowox.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/0cbd7f35736ab.pdfIn PDF document text
    • https://bijifejutumaxob.weebly.com/uploads/1/3/1/3/131381781/nidekikoboxaliture.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/zebapesuluboxaj.pdfIn PDF document text
    • https://fanavepuru.weebly.com/uploads/1/3/1/8/131871984/potutebemar_jotosonuzevuje_wopaxit_povabegi.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/nifit.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/kadupe_ripovu_jozovagazemewe.pdfIn PDF document text
    • https://zuxuzesis.weebly.com/uploads/1/3/1/4/131438019/5324547.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_off000072d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72D7 5184 bytes
SHA-256: a0205d40cb76118ae7f78886db73ae5d6b32d03a46a3abeed31f973e7c14db20
font_01_sfnt_off00008464.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8464 10120 bytes
SHA-256: 6ff12897c15efe6460fd31971b38d9fdfe7455df45467af8e7c3e1ef38dcd0cf