Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7d7cf8c1a4783fe…

MALICIOUS

PDF

73.1 KB Created: 2021-02-13 11:28:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 009fbf0f9a9c88af41064077c8ff7129 SHA-1: 4783838f2a8970b160305869faef05e8bfe354c7 SHA-256: d7d7cf8c1a4783feb0731f41021a3741d803cea0ae265611bd067197be53b794
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=tracey+woodard+alpha+m+wife In PDF document text
    • https://posesisex.weebly.com/uploads/1/3/5/3/135332701/bojolasigol.pdfIn PDF document text
    • http://clubstore.pro/standard_affidavit_as_per_annexure_etees4.pdfIn PDF document text
    • http://euroshopmn.space/healthy_food_guide_australiahoo3l.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490953/normal_60136c55d9989.pdfIn PDF document text
    • http://about-central.com/literature_review_organization_template2b4r0.pdfIn PDF document text
    • http://semengergel.ru/alive_in_shelter_18_dlc_free_downloads68mp.pdfIn PDF document text
    • https://pegujugadul.weebly.com/uploads/1/3/1/6/131637136/8375317.pdfIn PDF document text
    • http://byseles.xyz/nature_wallpaper_hd_for_mobilee1644.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381547/normal_601d73adb181c.pdfIn PDF document text
    • http://lovelyhouse.online/5563524114x212u.pdfIn PDF document text
    • https://sixikubirosepup.weebly.com/uploads/1/3/3/9/133997641/d5d129ad4c1942.pdfIn PDF document text
    • http://firstdoctor.xyz/carboline_890_data_sheety7hyp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452594/normal_600ecd22c5af8.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/rewepalazamiso/answers_level_11_94_games.pdfIn PDF document text
    • https://s3.amazonaws.com/wusone/lovineteru.pdfIn PDF document text
    • https://s3.amazonaws.com/fewunadupop/64785085726.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/beyblade_games_g_revolution.pdfIn PDF document text
    • https://s3.amazonaws.com/gofiguj/php_datetime_format.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/ruletevabelina.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_off0000e1f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F0 5360 bytes
SHA-256: d94aeb99be64038df6a468067d184cf8110be3e52280ff2706d14b93995b1f2b
font_01_sfnt_off0000f414.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF414 10348 bytes
SHA-256: 5ddfd45ec111db4ebfc6a676d264e35cd024e9d9c57874fbd04170551b2023f1

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