Malicious PDF — malware analysis report

Static analysis result for SHA-256 e71f361d7cc2e77f…

MALICIOUS

PDF

90.7 KB Created: 2021-03-03 08:27:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0382934cf4b69b2fb43f1d9c7d3d6f83 SHA-1: 2eb2afa18007e088b0f07e4a1fff56d3b740c943 SHA-256: e71f361d7cc2e77f9b92f5a9db7429886c2b8d84b6afffac6101fe45d88e31cf
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://golowaki.ru/award?keyword=english+grammar+exercises+with+answers+for+class+11+cbse PDF link annotation
    • https://pelimabogex.weebly.com/uploads/1/3/4/6/134685965/7171112.pdfIn PDF document text
    • https://ziziwatir.weebly.com/uploads/1/3/4/7/134713039/pixatojuwese_deposawoxuzuno.pdfIn PDF document text
    • https://venevivoxeda.weebly.com/uploads/1/3/1/8/131857756/kizevupi-jerebitak-tejogokaxow.pdfIn PDF document text
    • https://buparemekixa.weebly.com/uploads/1/3/0/7/130739227/gitazib-sedejut-kevegesiwepunen-zonive.pdfIn PDF document text
    • https://cdn.sqhk.co/fafujedajir/cjhhgjc/printable_planet_pictures_to_color.pdfIn PDF document text
    • https://cdn.sqhk.co/bozadukopufu/V1gkhaq/64080942659.pdfIn PDF document text
    • https://rapusixub.weebly.com/uploads/1/3/4/6/134631860/ca9dc80577b9.pdfIn PDF document text
    • https://zemizipip.weebly.com/uploads/1/3/4/0/134098502/degoguxekav.pdfIn PDF document text
    • https://cdn.sqhk.co/velabolo/ibzgcGP/city_driving_3d_mod_apk_android_1.pdfIn PDF document text
    • https://sajinekud.weebly.com/uploads/1/3/5/3/135391411/87e97b2ecaa0.pdfIn PDF document text
    • https://numuwawi.weebly.com/uploads/1/3/2/3/132303164/zivebatinex_nexezobi_fifuvasogir.pdfIn PDF document text
    • https://dilomosef.weebly.com/uploads/1/3/4/3/134316650/tibutapaliw.pdfIn PDF document text
    • https://jerefukixuludew.weebly.com/uploads/1/3/4/6/134686450/ac93203c76c02cf.pdfIn PDF document text
    • https://cdn.sqhk.co/ledumixifer/hihjhLc/ninjas_stolen_scrolls_mod.pdfIn PDF document text
    • https://pigogokeda.weebly.com/uploads/1/3/1/8/131857695/nasuxizi-pewilakamodid.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0001264c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1264C 5604 bytes
SHA-256: e00ee2d5cae16a837643f08020a711ba4f9172ababe18de7288cde68f5d020e1
font_01_sfnt_off00013958.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13958 10636 bytes
SHA-256: dca57c292e74e109778a39205359e92465ff252400bca6a69075ea538db526bb

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