Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0ed24d503ce9807…

MALICIOUS

PDF

72.3 KB Created: 2021-03-12 02:50:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0252e3a02c6684f754078e17d730e7b6 SHA-1: bc7d55624f72f31aab95de486765636df7041377 SHA-256: a0ed24d503ce9807f3afa0e87681ea6aaeeb7113a2adc06ee190c98c0905cdc5
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://fokemale.ru/award?keyword=binary+subtraction+using+1+s+complement+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4501660/normal_5fdef21f2f3e2.pdfIn PDF document text
    • https://luwojasog.weebly.com/uploads/1/3/1/3/131380471/jeruzo-xonaxovafiziv-kivawer.pdfIn PDF document text
    • https://wodelegijulafa.weebly.com/uploads/1/3/4/6/134677223/8612438.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366406/normal_601716bf33f12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367903/normal_60449259c6d55.pdfIn PDF document text
    • http://xanejog.medianewsonline.com/science_dictionary_free_download.pdfIn PDF document text
    • https://bilujadaju.weebly.com/uploads/1/3/4/7/134772480/nasokixajuzegaxazupu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451348/normal_5feb6bc6065cf.pdfIn PDF document text
    • http://mekapidi.medianewsonline.com/ffx_2_hd_100_percent_guide.pdfIn PDF document text
    • https://bematurom.weebly.com/uploads/1/3/4/8/134886193/33cc5d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470543/normal_5fd6db2ae86a8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://1eb42bdc-3da6-4b32-b75f-4382f1721f8e.filesusr.com/ugd/35474d_4dbb0735c5994a36a8805aff7d22afb5.pdf?index=trueIn PDF document text
    • https://b20aee1f-b1b7-4e4e-be5e-d884e4ece670.filesusr.com/ugd/10e3af_02f566dfd0d745b79dbd484181a1b1ed.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2669961f-87b3-4bee-9b05-75e64d47d768/rikusiveko.pdfIn PDF document text
    • https://65de77fc-0341-4fd2-89b2-cd6b005a91de.filesusr.com/ugd/cf79db_8664c685138443ad93dc54c6c9264f9d.pdf?index=trueIn PDF document text
    • https://a6053a4b-6066-498d-92a8-7748b68531bc.filesusr.com/ugd/5f0d2f_7e63bf7304ee42c585a330baccba4c7b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/android_ndk_path_windows.pdfIn PDF document text
    • https://729282ec-1290-4cbc-9302-cf8a24acd4c7.filesusr.com/ugd/42c189_3ebc6b397f0547c99a45f59a2d1927fe.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kofabube/gomirevuxipopo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/084beac0-d224-4ae5-8e45-d3c32ab47239/taludafukefinajaropab.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_off0000de4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE4F 5816 bytes
SHA-256: cc06d6ed78852023ca67dccbd0b7a5a20b14f31b0bade3228d9cce54b23c9d1e
font_01_sfnt_off0000f216.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF216 9912 bytes
SHA-256: 51bc9d5d1211cce5205e5c31641b74d3dad11b445cb9fe1b9c68e66522091df9

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