Malicious PDF — malware analysis report

Static analysis result for SHA-256 14970d07be7b0c84…

MALICIOUS

PDF

69.0 KB Created: 2021-03-07 09:06:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 165766f9c33ddd6032c296bd04331243 SHA-1: ad779d8c2d5881651ce7350edb79cb892199ae1d SHA-256: 14970d07be7b0c842f20509f337b6bc22c01a36e32e7f6f3f8fec247734e01af
196 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.
  • 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://mezovuduw.ru/award?keyword=brother+fax+575+directions PDF link annotation
    • https://rixafewokeget.weebly.com/uploads/1/3/0/7/130739987/571171368259e.pdfIn PDF document text
    • http://wofaguwere.iblogger.org/alcort_minifish_owners_manual.pdfIn PDF document text
    • http://golulim.iblogger.org/powerpoint_datasheet_l_g.pdfIn PDF document text
    • http://zabidegelid.iblogger.org/minecraft_server_1._12._2_forge.pdfIn PDF document text
    • https://cdn.sqhk.co/jujuziwe/ggjajjH/xinaloruzuwuxojej.pdfIn PDF document text
    • https://malolikekex.weebly.com/uploads/1/3/4/7/134718462/b194a3b228b.pdfIn PDF document text
    • https://cdn.sqhk.co/xewiliwilax/gf3OjHc/5733798561.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://4779f2f8-a33e-4327-9c78-21ee0bcf4620.filesusr.com/ugd/31bf02_0ef2ac8b81ef417c9d68b372874fa14e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/anti_virus_malware_terbaik.pdfIn PDF document text
    • https://fac30f9c-1bc3-4ff6-ac40-7ced1d2a170b.filesusr.com/ugd/3b7182_ff77178a017a4eaca73a1e6b89a49cf8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/sense_and_sensibility.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/gobodejufumexiz.pdfIn PDF document text
    • http://zavinawotomuvef.epizy.com/abhimanyudu_songs_telugu_naa.pdfIn PDF document text
    • http://jevetadubexega.rf.gd/weber_grills_charcoal_and_gas_combo.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/difegupijafuluduxigakawiv.pdfIn PDF document text
    • https://s3.amazonaws.com/xovekolamoxe/how_to_write_temperature_in_ap_style.pdfIn PDF document text
    • https://f499a9ea-5579-4d3c-a180-ba191067f9b7.filesusr.com/ugd/34ec99_688246e27a7547af89956cb5a0103929.pdf?index=trueIn PDF document text
    • https://5c90cfa9-af55-48e2-9430-1f3580382729.filesusr.com/ugd/e2b09b_6117e5667edd4bc9ae2691515679b138.pdf?index=trueIn 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_off0000d1de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1DE 5400 bytes
SHA-256: 6e05688987958612ae8982327f23648a3734f68ac921e327978b2687a0351198
font_01_sfnt_off0000e447.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE447 10176 bytes
SHA-256: 64fd36fd9754c48460f867e70a72ec7677f95e24bdc05fdfaa1ea171100be620

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