Malicious PDF — malware analysis report

Static analysis result for SHA-256 68addecac68b7907…

MALICIOUS

PDF

63.7 KB Created: 2020-10-23 18:49:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: e6c84b534405331f015bc5e796cf13b5 SHA-1: f3fd87e237f9ad458643c98c3797d4a3cb6a374d SHA-256: 68addecac68b7907e73179cb431ce7ba6295865015bc0973af52d19d748dd78b
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • 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.
  • 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/aws?keyword=carbon+fixation+in+photosynthesis+pdf In PDF document text
    • https://gewosawoma.weebly.com/uploads/1/3/0/7/130739201/9990789.pdfIn PDF document text
    • https://wojawafelufofux.weebly.com/uploads/1/3/0/8/130813934/2128366.pdfIn PDF document text
    • https://vapaniwagivu.weebly.com/uploads/1/3/4/4/134442769/zoboleguxizo.pdfIn PDF document text
    • https://kokexofagisukop.weebly.com/uploads/1/3/2/7/132710589/0c1c64de.pdfIn PDF document text
    • https://leputixoted.weebly.com/uploads/1/3/2/6/132683438/5489702.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/kolerir.pdfIn PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/8b5f48a74.pdfIn PDF document text
    • https://xoraxabaxid.weebly.com/uploads/1/3/2/6/132682630/8131429.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370319/normal_5f894d72f0767.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368243/normal_5f8766223973d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369912/normal_5f87e60a94ca4.pdfIn PDF document text
    • https://buxiniti.weebly.com/uploads/1/3/4/3/134309366/6794538.pdfIn PDF document text
    • https://polabufasol.weebly.com/uploads/1/3/2/8/132814050/nuvefitu_gopuxu_zekanew_bezix.pdfIn PDF document text
    • https://tipefejiri.weebly.com/uploads/1/3/0/9/130969755/9926630.pdfIn PDF document text
    • https://senobatupubem.weebly.com/uploads/1/3/1/4/131437889/202a75.pdfIn PDF document text
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/6299623.pdfIn PDF document text
    • http://www.opentle.orgIn 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/1/0493/7534/6847/files/wipeout_2_mod_apk_revdl.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/8946/8834/files/beauty_and_the_beast_dvd_2017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/8380/7902/files/dancing_ballz_music_line_mod_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/3938/1433/files/soben.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96144fe9-84f0-4d21-a439-e6a8fba7f67d/64052976394.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f6672df-4356-40c1-916c-2ba571f1a8d9/73014133249.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97ccaa93-432f-4363-8513-d1588e3fcc32/59541380247.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd52ab8e-b14f-4a6c-aaec-dd9be9082fe1/lozagizozade.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00008afd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x8AFD 13632 bytes
SHA-256: 36b3cec415e6b0b91f3a2dd2b149b238db7bf89896a69cfa5c1fc921a45b031b
font_00_sfnt_off000078f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78F6 5312 bytes
SHA-256: 27cef8e29b706dc580ec750c860c22176ab320c31ef27a65bc24813f6052ecb0
font_02_sfnt_off0000b0dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0DD 11964 bytes
SHA-256: 5bb5882cfb0d71d9541ea84d5aa7a010663b924192e869bcfddce656cd20de5c
font_03_sfnt_off0000d90b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD90B 16236 bytes
SHA-256: 5b4f67232ad72d2ffd452a698fb9ffe2fb50e283d3a0125be414c8e98ab6670e

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