Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfe302cf371acbb0…

MALICIOUS

PDF

69.2 KB Created: 2021-02-17 14:56:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 9546eb178ca9286e25fe2035aa3f53cf SHA-1: 08428a56f3f8f96f321748155f6f86b8cafd5d9a SHA-256: dfe302cf371acbb0637b4d4f35460d9f0921492837d7ece1b45fb841b84b73cb
254 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
  • 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.
  • 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.
  • 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://yafferge.ru/wix?keyword=honda+mower+manual+hr215 In PDF document text
    • http://experiment.website/zuzavodurunawazikiruwklgro.pdfIn PDF document text
    • https://dibevapanowodi.weebly.com/uploads/1/3/0/7/130776811/1718840.pdfIn PDF document text
    • http://techanomic.com/install_platform_toolset_v140_xpurkpm.pdfIn PDF document text
    • http://venira.su/fmea_software_templatexgcoh.pdfIn PDF document text
    • https://vomuzubedabop.weebly.com/uploads/1/3/0/9/130969103/592bca802657.pdfIn PDF document text
    • https://pivazadigemeza.weebly.com/uploads/1/3/4/6/134642233/8923477.pdfIn PDF document text
    • https://vumetubav.weebly.com/uploads/1/3/0/7/130776444/2020838.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/gagotaniwipure/how_to_use_zxing_in_android_studio.pdfIn PDF document text
    • https://s3.amazonaws.com/tiniruru/lepadumonubotifa.pdfIn PDF document text
    • https://s3.amazonaws.com/nevowimo/book_review_format_ks3.pdfIn PDF document text
    • http://ximawefab.epizy.com/delonghi_safeheat_solaris_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/arduino_nano_tutorial_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/vipinib/dizilopasadovasopodori.pdfIn PDF document text
    • https://s3.amazonaws.com/safenalavojuwu/caldera_peisa_unica_mini_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/roxawo/97454464578.pdfIn PDF document text
    • https://s3.amazonaws.com/resabomibogodaw/77285892988.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/46009482715.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_off0000d329.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD329 5248 bytes
SHA-256: d541119c6edf3705adedea6b98b7bc9aca0a40353bfe12b5a839ba91410214a9
font_01_sfnt_off0000e4e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4E6 10332 bytes
SHA-256: a86d47878d271ff28a649fd0b0330cfc84d9567b3b01bdeffece3538046a3757

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