Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2cb953d770daa90…

MALICIOUS

PDF

75.2 KB Created: 2021-01-06 11:16:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 202a4dcc4045cba9149993861bab1f8f SHA-1: d67a8ba7628d82d20848ee70902f4f84ba68a1d7 SHA-256: c2cb953d770daa9000a82c9eeb9afdf58428ca2932116687fe8a2719961fe6b8
236 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://trafficel.ru/aws?utm_term=dictionary+attack+text+file PDF link annotation
    • https://cdn.sqhk.co/miwataxanis/hidibr8/sapiku.pdfIn PDF document text
    • https://fagugirawax.weebly.com/uploads/1/3/4/3/134388021/fidumogik-fefelukoxofitan-belezu.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/busixakowun_zefisuni.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366627/normal_5f873de9c335a.pdfIn PDF document text
    • https://vejotawugupexo.weebly.com/uploads/1/3/4/7/134756202/0874ded4d876.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413113/normal_5fc495d6dfb51.pdfIn PDF document text
    • https://zafugetab.weebly.com/uploads/1/3/4/5/134502131/lizobexofe-butojazubiduge.pdfIn PDF document text
    • https://nulixedupalaz.weebly.com/uploads/1/3/0/7/130739510/4344907.pdfIn PDF document text
    • https://rixidagetowema.weebly.com/uploads/1/3/4/6/134612143/goxawebuziborit-wumasefe-nuwuwus.pdfIn PDF document text
    • https://cdn.sqhk.co/ludukuni/Usgjphh/mp3_music_player_crack_apk_download.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/guvovigo/apologizing_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/vobuturinivi/73919208406.pdfIn PDF document text
    • https://s3.amazonaws.com/dowesitobuga/89578617856.pdfIn PDF document text
    • https://s3.amazonaws.com/daselex/confined_space_permit_to_work_template.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/27359722914.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_off0000e690.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE690 4932 bytes
SHA-256: 0c0d75684a873ec9daea09ee38f26f3dc91af96f77877899973194658dd63239
font_01_sfnt_off0000f784.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF784 11992 bytes
SHA-256: aeba17285eb4f8f597aeecaef34bd41dee97e6bb61c0919cf75a9f9a58ff1f03

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