Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9c98dd1ade40fe3…

MALICIOUS

PDF

37.9 KB Created: 2020-10-14 18:44:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 0141abfc4b069aecb25af417db3ababa SHA-1: 7300b917cbc8809591e4097ae1cd56175c3cc2c0 SHA-256: e9c98dd1ade40fe308b3445053de2e9d04b17c877a5bba674995b0937b0b1808
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.link/pify?keyword=rennes+le+chateau+guided+tours In PDF document text
    • https://site-1036820.mozfiles.com/files/1036820/sirokikapotiz.pdfIn PDF document text
    • https://site-1043442.mozfiles.com/files/1043442/zawon.pdfIn PDF document text
    • https://site-1036820.mozfiles.com/files/1036820/58253750275.pdfIn PDF document text
    • https://site-1038504.mozfiles.com/files/1038504/76322665370.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365575/normal_5f86f49ad9bb1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365659/normal_5f86fb4a5bdea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365998/normal_5f86f783f14ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365551/normal_5f870caf106dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365639/normal_5f8704b3f0cd8.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/94be78ae-2f89-4e2d-9a97-caf9c70066e2/7409639722.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa9d6bae-28b0-4d55-b54a-99987592fe10/51020430029.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b5b964f-940a-4613-8884-949ed6105d2f/17886424018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/913da3d2-4c5a-4e3b-8f24-ae0b492a686f/sesitivadu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/243d04b8-ca9d-458d-b8d4-55b75775f4a6/kozuvufusapaga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8758/4675/files/lomunukero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/4273/6790/files/crackling_noise_in_ear_when_loud_noises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5649/1417/files/ff9_chocobo_hot_and_cold_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/7040/0928/files/51768561226.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2764/4072/files/que_ensea_la_doctrina_de_los_nicolaitas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8506/1014/files/google_docs_highlight_shortcut_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0468/8828/8413/files/pekka_coc_level_8.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0868/7769/files/rokodobutunivo.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_off0000571e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x571E 5208 bytes
SHA-256: 261f96880f7684abb127f1bb59f60b48ca0caa035fb5f732d78d40dbb8b1a807
font_01_sfnt_off000068c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68C3 9932 bytes
SHA-256: 0b91a627ffc792aa99d3c755de1abfb0fc1846798d8bf94e8293b2b4e10a74a4