Malicious PDF — malware analysis report

Static analysis result for SHA-256 238e2cc296181411…

MALICIOUS

PDF

69.9 KB Created: 2021-03-11 07:45:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 875b0a4c91f9e9ef71b2ac3cd4a0c9f5 SHA-1: 8386e4ab117942a5b32212b218c639ffcef2f8ce SHA-256: 238e2cc296181411cb8efa12b66c286856aeea3fdefb90dd8426f6604dbe480a
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://xezojetit.ru/award?keyword=calendario+annuale+2020+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4497095/normal_6047b67fa3021.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401518/normal_60186788638e4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365536/normal_600514b41f82a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390659/normal_603a5507b466c.pdfIn PDF document text
    • https://sedozexejelem.weebly.com/uploads/1/3/1/8/131871533/wifezesenamug_rarudutuwa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386076/normal_5fde03ae5120b.pdfIn PDF document text
    • https://lobobofu.weebly.com/uploads/1/3/4/6/134680821/b93cf2e38.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://042e50b4-45d0-4577-915a-c14d43ab21ad.filesusr.com/ugd/18f527_507a1a3a89074a0491a2cf28a84b1c35.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fdd2768-eda0-47d8-a5b0-d7577b847fd6/washington_state_law_undercover_police_cars.pdfIn PDF document text
    • https://6e7ef639-f89a-4701-86f9-710a836f1183.filesusr.com/ugd/12745a_bee10d1a0ae4431482585cb0834b50a6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dejolavubukugeb/ritinabevonozurune.pdfIn PDF document text
    • https://d17f4099-ecc1-42b1-9c73-51521793457c.filesusr.com/ugd/4a2613_2c949419f70c49178017d0e2ce1379fc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/pathfinder_kingmaker_guide_to_kingdom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4019b1e5-6d2a-476d-a077-7018ebf93692/gumotige.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cabfb2b6-77a9-4616-8624-a21516a4d449/56796730218.pdfIn PDF document text
    • https://5e6d3f51-9b35-4a29-baf4-1f036254a461.filesusr.com/ugd/99a8f2_137a4e7c0a774e1ab8f43d69dc36596c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e78997b-9599-443d-bd9c-2e306ffe9b44/tezojakululuzititoma.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c477.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC477 5036 bytes
SHA-256: c7b71e953e23b9da637cfdd5c1d692b6914c3daf303fda9f49c97834b92be39d
font_01_sfnt_off0000d596.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD596 5936 bytes
SHA-256: 16fd59701fcaf1440bb725e2266876a3e6a31e791f4ab5480257a3ee21eaf73d
font_02_sfnt_off0000e4aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4AA 11076 bytes
SHA-256: a178a79d7161a1b5ad6a078697b94126f00f833fd667af69c476df8da851138f

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