Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdfcf6fd60c09e57…

MALICIOUS

PDF

73.9 KB Created: 2020-12-01 10:24:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: dae492fb2aed33a38453afeb5ffa6bbc SHA-1: 8c9288c835e03af0c52bd818dbc4a49ada37c4da SHA-256: cdfcf6fd60c09e57f466d0f215430a94979bc35724006f950fd0ca2d5545e9d5
156 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
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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/square?utm_term=presbyterian+church+investment+policy PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369640/normal_5f9646377e65f.pdfIn PDF document text
    • https://takimibovejexi.weebly.com/uploads/1/3/4/5/134512521/2489170.pdfIn PDF document text
    • https://xukopalobupekon.weebly.com/uploads/1/3/4/7/134730613/lejimazo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480590/normal_5fbe0c1fbd748.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6c54df7-5ebf-4d5e-bc83-553286962836/how_to_frame_a_window_in_a_wall.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ca470ee-8d02-4f58-aefa-ed68e17d0b98/bluebeard_story_original.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af61d561-cdde-45e2-a8b6-e0fc054156be/88275928321.pdfIn PDF document text
    • https://s3.amazonaws.com/dakebesuvum/balanitis_antibiotic_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/xelimewat/hydrogen_peroxide_sds_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/gnss_raw_measurements_android.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/jagogiwunot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad477c2e-29d5-48ec-8bbd-2058019e7554/slim_and_sassy_doterra_ulei.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d566941-69f6-4f7d-b3c8-2bd43acb5593/15666970280.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89cf65ef-5813-4547-a9df-1d8397143652/21458943168.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a7c970c-5624-4134-8d3e-8e0f276a85af/41323349537.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_off0000e355.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE355 5476 bytes
SHA-256: fe46a3d34afcf27d0df8156c38e29237a238b831312ba29063a36c6306db7a0e
font_01_sfnt_off0000f5d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5D4 10840 bytes
SHA-256: 01131f57badbc869debf609c8820704376f3e5da7009057f1e1f7da360b4d639

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