Malicious PDF — malware analysis report

Static analysis result for SHA-256 017b595f78b68cd2…

MALICIOUS

PDF

73.2 KB Created: 2020-11-16 21:05:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: d6f15fad836c1ffef9a339395dfb5ccf SHA-1: e3fa992b61a4e5b163bf116c5eb9cfb25cabef25 SHA-256: 017b595f78b68cd2fb0f653fe75b5bcc7a85905a589ec74e648c3f6493b16980
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://traffset.ru/123?utm_term=persepolis+pelicula+completa+en+espa%25C3%25B1ol+latino PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366408/normal_5f8db9ec20727.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383450/normal_5fa12acf4fdc2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482882/normal_5fa6e3a08a6d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426953/normal_5fa9b933cb749.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422912/normal_5fa5f1610a3bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414167/normal_5f96170b44817.pdfIn PDF document text
    • https://fixisoxu.weebly.com/uploads/1/3/4/4/134489079/7755589.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/muvojugejoxip/nuvimebumagovuxetureturen.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/reasons_why_young_people_join_gangs.pdfIn PDF document text
    • https://s3.amazonaws.com/kudefem/crsi_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/napizujufogawuvoferuxis.pdfIn PDF document text
    • https://s3.amazonaws.com/kepevipawit/fisasif.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c3af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3AF 6440 bytes
SHA-256: a606a6dede3b99472d2ac97761204782646b5f75106b48d1abccbe9a99ca9a4c
font_01_sfnt_off0000d3a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3A3 5292 bytes
SHA-256: 6e6349adf894df879dc43646efe8222a6e5639f4784e854eea6599077f17de95
font_02_sfnt_off0000e544.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE544 1716 bytes
SHA-256: d7ea1fcb56881155405295582d78bbd7a96c40251f9b7d9bd0874708c9c87c0b
font_03_sfnt_off0000edcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDCD 12028 bytes
SHA-256: 04fe77dd762ee530d84c3cfe0d103e102e5c56a91ebde34df11d3a43b87f5f46

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