Malicious PDF — malware analysis report

Static analysis result for SHA-256 0514f54b2d7a6071…

MALICIOUS

PDF

58.1 KB Created: 2020-11-06 21:48:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: d06d3bdedf45e81c9ebd809df395b428 SHA-1: 87a3302eac7969c0520dc9cc70c16cf24e5496b7 SHA-256: 0514f54b2d7a6071a5e6c32fed4943698d7411d61d3955fcc1262c1937476355
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://traffset.ru/aws?keyword=i+points+on+wii+sports+resort+island+flyover PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375080/normal_5f8a30741652a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413111/normal_5f9817e245348.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408871/normal_5f9506c1e071e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446491/normal_5fa0574c31ed0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/blank_biodata_form_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38b672f9-c099-4b7b-9e86-a639a172354c/jawiwafaluzexire.pdfIn PDF document text
    • https://s3.amazonaws.com/xamapebonijos/5590170105.pdfIn PDF document text
    • https://vuwujija.files.wordpress.com/2020/11/79995466096.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72209aee-fefe-4454-a3d4-4893c0f077be/star_trek_adventures_download.pdfIn PDF document text
    • https://pufelaneniw.files.wordpress.com/2020/11/melene.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9802d4e-449e-4125-8dd7-0402d973052e/2009993116.pdfIn PDF document text
    • https://pafegum.files.wordpress.com/2020/11/xumakosokidazok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf01dcc3-ba1c-481e-ad2e-821be9dce782/jorewitafojavogebowage.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9fcca19-d7f1-4ea0-b535-1ced8fa7210f/ultimate_mortal_kombat_3_download_pc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c73f9517-1a65-4cf6-8558-2e1bba5c2153/45957756270.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb784352-577e-4eac-bef8-4ced7dfdcd9e/pee_mak_eng_sub_full_movie_watch_onl.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_off0000a510.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA510 5228 bytes
SHA-256: 1d3674ee213c20b26fb1abac9d4059b23a133707a0b065a82d026b229308f524
font_01_sfnt_off0000b702.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB702 10700 bytes
SHA-256: 025e3a1e1fd59b1154bb8c855aa8a5955aa11c9000774f5bfff4eb40d12f705c

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