Malicious PDF — malware analysis report

Static analysis result for SHA-256 e038982c0eef1397…

MALICIOUS

PDF

48.4 KB Created: 2020-10-16 00:18:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 64539f4ad7f9eccdcc7d52c9911a7265 SHA-1: 2e504404cfdb2c0f2e7a473c55102608d3af478b SHA-256: e038982c0eef139731178e53747356025f2a8e7fa5c5b4f42fb56c03cf4692ae
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://cctraff.ru/123?keyword=multiparametro+hanna+hi+9828+manual In PDF document text
    • https://lipowuripipu.weebly.com/uploads/1/3/1/3/131378852/saxajibuvatutuk_fakilerani.pdfIn PDF document text
    • https://pejopazuzaguwoz.weebly.com/uploads/1/3/2/8/132815183/ada42ce.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/zuvekazabuz-topofelo-gupolekodojavo-ponabiloxe.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/665612.pdfIn PDF document text
    • https://kekerisasil.weebly.com/uploads/1/3/0/7/130775365/zodutobo_mevibores.pdfIn PDF document text
    • https://tajurasexir.weebly.com/uploads/1/3/1/6/131606020/tasezekavudosewulo.pdfIn PDF document text
    • https://zelapagetuwuj.weebly.com/uploads/1/3/1/4/131406140/c85f0cbef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369774/normal_5f88ba603ea58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373527/normal_5f88b97490153.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365628/normal_5f8731a1b9454.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7431/4946/files/phobia_of_frogs_origin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9473/7045/files/vogerulizuwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/0075/6891/files/repikojufegiwavurujiro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/2895/8365/files/windy_and_warm_fingerstyle_guitar_tab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/6988/5601/files/24886384978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5382/4677/files/the_lords_prayer_worksheet_ks2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/5361/5770/files/gixiwevipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7937/1414/files/quasi_static_shear_flow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6039/5673/files/susie_q_movie_disney_buy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/4512/6812/files/solvay_high_school_yearbook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b9db3b6-55c8-40ce-8214-275431a627b0/ginodetax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b33acf1e-ecfa-4c1a-9b2c-185217b9e838/92724460896.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45b99bf6-e26e-4f69-b4af-0da3bf14a619/wofodilivagogazisisiwapi.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_off00006fde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FDE 5252 bytes
SHA-256: 3aa6fd0e44d18b08598fd5ddeb06b3930cada901c2c49315d40c340786c6f5a1
font_01_sfnt_off0000818e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x818E 10544 bytes
SHA-256: 848c6a5dedb64b3e8f4826ee28ddd40472ad6318a5399eccfaee102f0e43354c
font_02_sfnt_off0000a596.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA596 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e