Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1b0ad60ed7321ce…

MALICIOUS

PDF

44.4 KB Created: 2020-10-16 03:21:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e03c40832ed13b7ffac32d01814df608 SHA-1: 28411994e2cb10ef9006703933b52120407a528d SHA-256: b1b0ad60ed7321ce3de10f613ee3340a3593ac44d17a6bdb046e43759b15ca71
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://ggtraff.ru/strik?keyword=android+studio+source+code+free+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366341/normal_5f875703caafd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367631/normal_5f88d3191b338.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365652/normal_5f876e51a203a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366659/normal_5f875bc2b0933.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370263/normal_5f8816e773832.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/ratot_muweliwamopoj.pdfIn PDF document text
    • https://zeginuvo.weebly.com/uploads/1/3/0/7/130775519/zagif-deriwikumu-jupokiduf.pdfIn PDF document text
    • https://kidunaxu.weebly.com/uploads/1/3/1/4/131437100/7707936.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/44d87feaf8ee.pdfIn PDF document text
    • https://pezopipowom.weebly.com/uploads/1/3/1/4/131406060/lonew_xexasar_benavuvi_kipako.pdfIn PDF document text
    • https://site-1044019.mozfiles.com/files/1044019/motorola_g7_power_user_manual.pdfIn PDF document text
    • https://site-1040317.mozfiles.com/files/1040317/97797693418.pdfIn PDF document text
    • https://site-1036639.mozfiles.com/files/1036639/31055178406.pdfIn PDF document text
    • https://viweposedijul.weebly.com/uploads/1/3/1/0/131070314/gitetomuvi_toleko_gerusiletufal_lineredigawutog.pdfIn PDF document text
    • https://xijonezamo.weebly.com/uploads/1/3/1/4/131407630/betujo_nigoj_kixazekulibebe.pdfIn PDF document text
    • https://gevafitasib.weebly.com/uploads/1/3/1/3/131380901/1429013.pdfIn PDF document text
    • https://fiwatinizajof.weebly.com/uploads/1/3/0/8/130874156/nodimiwikek_bifemomeze_kegirelad_xubijusamozaw.pdfIn PDF document text
    • https://xedaliwim.weebly.com/uploads/1/3/1/4/131454603/polimuponoxu_bejujabu.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/digokasawuj-jipamuputevuf.pdfIn PDF document text
    • https://bibeliki.weebly.com/uploads/1/3/0/7/130738572/lebof-jekifugivavane.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/4956/8424/files/how_to_hack_moviestarplanet_coins.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/5027/1388/files/pltw_5.4_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5294/9913/files/motorola_ls2208_programming_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0638/5558/files/sex_linked_pedigree_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8070/3382/files/11504032889.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DDE 5096 bytes
SHA-256: 6db3e03b7c8960e8351872b0946ee5eec589ea952b176d68624f22a0904f1a87
font_01_sfnt_off00007f4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F4C 10656 bytes
SHA-256: 7f14afdf4dcecbcdf5559ab79673fea5514e221d7db80b6c57f9398d2be5a255