Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3187d12d5de08fb…

MALICIOUS

PDF

51.2 KB Created: 2020-10-30 02:53:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: c9eff812cd204a4ab1864cc7d6261c63 SHA-1: a02da2102843f405d1604b339eb55bef2409f279 SHA-256: f3187d12d5de08fb53f03582346da1054b51ca5579158b925391c9187c842ffc
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://cctraff.ru/aws?keyword=1st+edition+dm+screen+pdf In PDF document text
    • https://pezopipowom.weebly.com/uploads/1/3/1/4/131406060/rojepijurazukidusodi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370088/normal_5f905216e4d95.pdfIn PDF document text
    • https://rivisoni.weebly.com/uploads/1/3/0/7/130739016/rupazidu_zajedubado_ruzevele.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/a5b79915-d082-461e-ac16-76f0d43dea6e/9569264329.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c954b4cf-292d-4a88-b7ee-7fd898a81523/58850564789.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/ginufiwedogedevepi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f36bef20-2792-47f8-8b95-8028c5056b85/mines_of_moria_maps.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/48738722150.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56c1745c-6f64-445d-9ab7-30da4f8bf096/gegiletu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4972082-f915-4aa5-820a-12062da5c2af/zonerizi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cab1910-505e-4bcc-a40a-6fab0dd29dab/radunuvipodibe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d3117e3-43a0-48ce-ab75-32d9cbabf139/solidos_de_revolucion_calculo_integral.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/occupational_safety_and_health_act_and_regulations.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2395cce-93c2-45a2-a37a-642a1e8a2420/39697644978.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/metal_oxides_in_heterogeneous_catalysis.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/watch_weathering_with_you_english_dub.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_off000086b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86B6 5016 bytes
SHA-256: 5240b1e2174ab99630d91899e93250952a60f735847d237b311fb62fe608d511
font_01_sfnt_off000097b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97B4 11924 bytes
SHA-256: 95475750dff6404651e3da92998cf49a4b81c0feebd75521a0f024dcef8de4df

Open this report in the interactive analyzer, or submit your own file for analysis.