Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f7e256f6e7d74f7…

MALICIOUS

PDF

53.2 KB Created: 2020-10-26 08:20:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 454f7e7bd5b18ac7b742c82cecafefca SHA-1: 3b5fc99bf2a23761bc235d7c66ca126268c078b5 SHA-256: 6f7e256f6e7d74f797ab4d763dfde6daf9f74da7950c0bac04f5c42b819fccf1
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=vastu+shastra+pdf+in+gujarati In PDF document text
    • https://miwebuzoz.weebly.com/uploads/1/3/4/0/134095964/fojadinuzajotojowok.pdfIn PDF document text
    • https://zonepebitebebo.weebly.com/uploads/1/3/4/3/134369254/vorudetabobate.pdfIn PDF document text
    • https://vozupixog.weebly.com/uploads/1/3/4/3/134312338/1669302.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/494886.pdfIn PDF document text
    • https://dunidapakepew.weebly.com/uploads/1/3/4/3/134319263/7988338.pdfIn PDF document text
    • https://xogexemufak.weebly.com/uploads/1/3/1/4/131437987/vegutafekopeberadan.pdfIn PDF document text
    • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/3327695.pdfIn PDF document text
    • https://veforolafumokiv.weebly.com/uploads/1/3/4/3/134340642/b6684858a5f24c6.pdfIn PDF document text
    • https://xifobosakup.weebly.com/uploads/1/3/2/8/132815359/gekoxuvizobuvewil.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.indictrans.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/0787/4490/files/39829232927.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/2417/7093/files/curso_de_economia_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4916/2654/files/37007729859.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/2844/1244/files/nenibogobe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9209/0788/files/words_in_a_pic_answers_norsk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5917/3784/files/hollow_ground_screwdriver_bit_set.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/3227/5865/files/transition_words_for_argument_writing.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/kemulekupejoxu.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/design_patterns_in_vb._net.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D55 5312 bytes
SHA-256: 987d12b6c635657f6710103a7d565e23ae10f4b9e955697e8d259d5b118b2888
font_01_sfnt_off00007f63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F63 9228 bytes
SHA-256: 68e8e52375d2e531ef997b4356e59d8a9cb53bdc2d44e802a9d34c68d72adeba
font_02_sfnt_off00009cfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CFD 13364 bytes
SHA-256: 061acc0871e26affb4e612bc907c782668f4c2895232672fba9cadb96940de15

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