Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ed6467f7add2468…

MALICIOUS

PDF

44.9 KB Created: 2020-10-25 14:08:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 22bc6f925f304b461bcbd2ccdda51861 SHA-1: 7e3f2967662f2afebb1d7eeded4024089dfb2d62 SHA-256: 9ed6467f7add2468f4584fc269b64f5468da71f5ebf4bf3221e6a1e20395d719
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://ttraff.me/123?keyword=stickman+rope+hero+mod+apk+unlimited+money In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369179/normal_5f8b61bb95ca8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370561/normal_5f8c201d6fc8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384459/normal_5f8cef5322fdd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410002/normal_5f9381406b537.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386842/normal_5f91396d0ba96.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374984/normal_5f897c05d5cb5.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/2a2866ee-6a3a-4c93-991b-6434d3daa911/algorithme_et_programmation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4470f5c-e95f-47d9-8b7c-fd4a482b23dd/duwipilodolowe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/3272/2599/files/aap_trisomy_21_screening_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9816/8743/files/geometria_analitica_paulo_boulos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/9679/8912/files/84367856590.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/0801/5513/files/1956_dodge_truck_wheelbase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2469/7509/files/photo_video_maker_download_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5076/1892/files/crystal_picture_frames_wedding.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9087/9682/files/55910840887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7775/5562/files/eyecon_caller_id_pro_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/9624/2856/files/16738990721.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6845/9670/files/tejido_conjuntivo_hematopoyetico.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_off00007094.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7094 5404 bytes
SHA-256: 178f43eaa6b70b3a1d3a57d3a4500ab89c14da077accf2ef4bdbe7c8ddc99570
font_01_sfnt_off000082c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82C6 10308 bytes
SHA-256: 3e5e1c175cbb83cf8a47244ef0995d7ccdfb4e6e0cd76f3a9170945338c9c866