Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ab6ee0b2293d5e1…

MALICIOUS

PDF

140.2 KB Created: 2020-11-04 14:43:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 4bec3adb34dc22ac598bc684bfb3969b SHA-1: da9268707762c2f597d4735f95c2e7f585d01191 SHA-256: 7ab6ee0b2293d5e109046f84752f8f66a869569097acad9a44c78a0228dbd620
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=tennen+kakutou+shoujo+chihiro-chan+chapter+13 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367271/normal_5f89ba2d545f9.pdfIn PDF document text
    • https://gazitagoro.weebly.com/uploads/1/3/4/0/134016873/sukivid_fawuk.pdfIn PDF document text
    • https://sozivutapadonen.weebly.com/uploads/1/3/1/1/131164462/muzaginujipake.pdfIn PDF document text
    • https://jawemojope.weebly.com/uploads/1/3/4/3/134399256/e9e2b.pdfIn PDF document text
    • https://loxazofobel.weebly.com/uploads/1/3/4/2/134265844/6571751.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365589/normal_5f964c7326f03.pdfIn PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/mimadawa-nuguje-sanagatog-mupagiser.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/infinity_wedding_bands_diamond.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/xazowu.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/obesidade_infantil_e_sedentarismo.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/descubre_2_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/94280796451.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017bf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17BF3 26404 bytes
SHA-256: 7d23533151590fa5b34ee6de772ddc5d2b913d09d80f2622765dca569f28efdc
font_01_sfnt_off0001cf65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CF65 5324 bytes
SHA-256: eaa49ea1127b47e271121eb6732db0e991f3dac8a674a7c65c4282fc6aa04125
font_02_sfnt_off0001e18e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E18E 14220 bytes
SHA-256: 49456798465a47977f4a7513c7b22498cb85ca1ea728446667101c71af5ffa2c
font_03_sfnt_off00020d79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20D79 16092 bytes
SHA-256: ea75db71c9df7250347a03039f742fcd189f5fc3f08964e696816fa8b5227073

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