Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cd0c02c8c4d5122…

MALICIOUS

PDF

56.1 KB Created: 2020-10-28 20:19:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 7dcc4e00fcadd672c96e6f9a96318143 SHA-1: fb99fa0b472909df084e44c1add35bc9de60a8f0 SHA-256: 6cd0c02c8c4d51223382caa1f07e318f7fc7e164fb21b22d345c2cf68c493b43
194 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://gettraff.ru/aws?keyword=catchphrase+music+mp3 In PDF document text
    • https://gazapaxinu.weebly.com/uploads/1/3/4/4/134475358/bamanakefaw_fufuniwelokur.pdfIn PDF document text
    • https://zegojipoxe.weebly.com/uploads/1/3/1/0/131069766/xuxovazovis.pdfIn PDF document text
    • https://buximinolid.weebly.com/uploads/1/3/1/3/131381316/zaboborom.pdfIn PDF document text
    • https://batagokefo.weebly.com/uploads/1/3/1/0/131070859/kepesawes.pdfIn PDF document text
    • https://sibikobibe.weebly.com/uploads/1/3/4/0/134040949/vifivaribu_dogegob_xirukowepasopa.pdfIn PDF document text
    • https://worozimovazez.weebly.com/uploads/1/3/1/4/131406108/fuxol.pdfIn PDF document text
    • https://sizukejagu.weebly.com/uploads/1/3/2/6/132681884/zuzunegufobir.pdfIn PDF document text
    • https://wefejakero.weebly.com/uploads/1/3/0/8/130814310/312b71.pdfIn PDF document text
    • https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/6589395.pdfIn PDF document text
    • https://wosezobar.weebly.com/uploads/1/3/1/8/131856012/gubivufexanumozovuti.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/ruxozukozuvazu.pdfIn PDF document text
    • https://podesasi.weebly.com/uploads/1/3/1/4/131437149/xexemupuka.pdfIn PDF document text
    • https://konanofekevofi.weebly.com/uploads/1/3/4/3/134367310/1695759.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00009b94.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00009b94.bin)
    • https://uploads.strikinglycdn.com/files/bb26b67d-c61e-4b36-a850-d2ab54ef7c56/software_architecture_in_practice_third_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/pasegu.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/votaxejogekawizamatapifu.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/91402397812.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/rounding_off_decimal_numbers_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/bikini_body_guide_nutrition_plan.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/97786232258.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1b5cdf3-f610-4236-81bd-58b5d6c70f0d/vigebologagulasujexa.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_off00009b94.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009b94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B94 5208 bytes
SHA-256: fed383af709eeb0925a778cd4a02a3a797acf2bbb13af6f2c53f15c468af4a7f
font_01_sfnt_off0000ad1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD1D 11544 bytes
SHA-256: 42dece0e1471af655c95cbf12b0c8603ef5afa2fd30f2c63e6b75b6e0ce6ce85