Malicious PDF — malware analysis report

Static analysis result for SHA-256 1184a08cb06e868d…

MALICIOUS

PDF

61.4 KB Created: 2021-02-24 02:01:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5673ac98a0846c642c672330dfcd7954 SHA-1: 8c15e3eeec6345ea2f5ed3e66396159a38a80fc9 SHA-256: 1184a08cb06e868d05bc3605f78fa9dcc8b89742c46b9339d00027b6123b4ba0
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/123?utm_term=vtech+handset+cordless+answering+system PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4485703/normal_5fd0741eba8fa.pdfIn PDF document text
    • https://gixisisopovi.weebly.com/uploads/1/3/4/7/134713576/sepozofuro.pdfIn PDF document text
    • https://rowopubogapog.weebly.com/uploads/1/3/4/2/134234702/lozidipokifame.pdfIn PDF document text
    • https://kofosobi.weebly.com/uploads/1/3/4/5/134528260/8de38be5b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494429/normal_6030a1d0ceac0.pdfIn PDF document text
    • https://bevozuvegala.weebly.com/uploads/1/3/3/9/133999301/dojavibapegerimono.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380090/normal_601a85a9211bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459054/normal_6030da185ff67.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/radubozufiwo/twins_effect_2003_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/vogubivajavofu/52442593932.pdfIn PDF document text
    • https://s3.amazonaws.com/pazerogasarinu/7289884048.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/13015848829.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/verinenavav.pdfIn PDF document text
    • https://s3.amazonaws.com/fulazelof/wenisigaxilutafa.pdfIn PDF document text
    • http://puwodadivuxasaf.epizy.com/impulse_turbine_velocity_diagram.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_off0000b2d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2D3 5512 bytes
SHA-256: 95d109d3ca3d41ab609a75e5c7e6f61a9d945e0cb8c738c635572fb714f372ac
font_01_sfnt_off0000c57e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC57E 9796 bytes
SHA-256: 8c6e0e50689ae2d084e02dc95b781bb7e40ddbe178f811b6f08ef9a3debab69c