Malicious PDF — malware analysis report

Static analysis result for SHA-256 69efec9bb5eba8f5…

MALICIOUS

PDF

44.4 KB Created: 2020-10-26 07:32:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 46dde1d1ff81e22df6d1b7d68149ed9d SHA-1: 15b510f6dd18b21d08e5a79163e336b4a72142a4 SHA-256: 69efec9bb5eba8f5f4cb2ae070b6a306e8c1dd3ab0b46e752e58aa3e692795dd
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://cctraff.ru/123?keyword=google+translate+app+android+free+download In PDF document text
    • https://kutenamig.weebly.com/uploads/1/3/0/7/130740069/pajaji_tumovupevojene.pdfIn PDF document text
    • https://tedomidile.weebly.com/uploads/1/3/2/7/132712102/vofiwinenosolu.pdfIn PDF document text
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/f339d958838c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407733/normal_5f9524e2411fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370092/normal_5f8aa8b6ced7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381547/normal_5f8cc9c77e46b.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/bilasesuve-kifubenoxa-kovefow.pdfIn PDF document text
    • https://kafasomawupi.weebly.com/uploads/1/3/0/7/130775431/cc94e2f936e8f2c.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/7805117.pdfIn PDF document text
    • https://murepofolod.weebly.com/uploads/1/3/4/4/134480544/5820645.pdfIn PDF document text
    • https://zimiduninu.weebly.com/uploads/1/3/1/6/131637103/b9cdf.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006da3.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006da3.bin)
    • https://uploads.strikinglycdn.com/files/016e82a3-0481-4ad8-bbe3-0f28fa77ad66/tirewilefesevatutan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43757611-f2a5-44c6-89b4-8e311ab68510/neuroscience_purves_5th_edition_down.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85923323-ad97-483a-a70d-3777cd7b5cfd/sorigufubanolugitejos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cbe7d86-38f2-44bc-948c-b39b237b6615/fenomenolojik_aratrma_nasl_yaplr.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/429c5363-b58c-41d0-bf34-4876cf63cd90/3796499302.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62b16194-351b-4eec-96ff-61c5069d6f7f/vumirilarefuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43365b5d-f5df-461b-9f9d-ca0172a6c3e3/cursive_writing_capital_and_small_le.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/6178/7805/files/30788573700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0957/1989/files/mepoxavow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0469/4963/0113/files/98760810269.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9481/1832/files/sdsu_teaching_credential_prerequisites.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 extracted file (font_00_sfnt_off00006da3.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006da3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DA3 5332 bytes
SHA-256: a5f57b17a30fe77c05173ae85620aabb4719a8a95e228b73334649f9e2bffb94
font_01_sfnt_off00007fe9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE9 10580 bytes
SHA-256: 6751c41d396e80005c76c8ab5686167738d5c4196006988ecfe4fc28b01c3cee