Malicious PDF — malware analysis report

Static analysis result for SHA-256 78c2cad4ad8c34e2…

MALICIOUS

PDF

71.9 KB Created: 2021-03-14 06:03:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 0b2955922f38cfd60e94270ce49b3209 SHA-1: 1f434ba61b8194f92061ab77ba3b80a513873c14 SHA-256: 78c2cad4ad8c34e21b32910b8dd8206c21f6213a81191cad805aefb12740f7c6
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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://resalured.ru/123?utm_term=lyle+and+scott+mens+size+guide PDF link annotation
    • http://diguwejilevaz.22web.org/wipan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421767/normal_604a9f524252e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474734/normal_602586023c75a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393514/normal_5fef828db3a2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370268/normal_6014a02e038f4.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/xefejevife/95407122569.pdfIn PDF document text
    • http://pezokom.epizy.com/chess_tactics_for_beginners_2.0.pdfIn PDF document text
    • http://nifekubipaxo.epizy.com/jebavizak.pdfIn PDF document text
    • http://borinalujid.epizy.com/wow_allied_races_druid_forms.pdfIn PDF document text
    • https://7095e710-59ac-4d27-8a5a-f3bbcaf65deb.filesusr.com/ugd/418e76_7bf682da68d4459295a34f990e7740be.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9c133fa-9eca-43f1-a018-d189b0b8b979/golds_gym_stride_trainer_350i_price.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3aa16cf7-2bba-41ac-9fcc-b52eefdfd89b/el_rancho_coronado_hotel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/502a1643-589c-4b90-b488-43e0b992e534/jomazuzitivaluvak.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/98501258130.pdfIn PDF document text
    • http://tukufewusi.epizy.com/jofesuvajir.pdfIn PDF document text
    • https://c8a164a7-2549-4056-b209-d27d417f800b.filesusr.com/ugd/136d3d_7ed063f285064579ac29004d90eb0711.pdf?index=trueIn PDF document text
    • http://mogigolutatuliz.rf.gd/71471494822.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/14697023340.pdfIn PDF document text
    • https://s3.amazonaws.com/kifutizijebuj/hcfa_1500_template_free.pdfIn PDF document text
    • https://5e0c4d4d-41f9-428c-9564-b93e7cff6769.filesusr.com/ugd/510691_a6b9d3ca68a544fc989c07410e36b9b2.pdf?index=trueIn PDF document text
    • http://fiwipofel.epizy.com/nespresso_vertuoline_problems.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA0B 5256 bytes
SHA-256: e7b6f64c8603dbfb6519cad6d69a90692522dcf7f2411cbaab63d48a7825dce6
font_01_sfnt_off0000ebf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF7 11344 bytes
SHA-256: 481ba19f2f27afcf4eac3f08b280687a06cd53416fbd745e1b673b846c9a6467

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