Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ea48dec5aa96003…

MALICIOUS

PDF

47.5 KB Created: 2020-10-22 17:58:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 62811ddb3c216b5e7e5438ad5087ecf7 SHA-1: df2b3a12f3de7328ecad91a24c33bd72da2a5de7 SHA-256: 9ea48dec5aa9600341d632162e6ea757d21e98256d79150b474600d367eaee93
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/123?keyword=torque+pro+apk+full+espa%25C3%25B1ol In PDF document text
    • https://sujajikozodes.weebly.com/uploads/1/3/1/3/131384638/944560.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/bupemigimamuvap.pdfIn PDF document text
    • https://mivosubewo.weebly.com/uploads/1/3/1/4/131407796/93564f5597c377.pdfIn PDF document text
    • https://xetutinafo.weebly.com/uploads/1/3/0/7/130775845/1981929.pdfIn PDF document text
    • https://jikajulimag.weebly.com/uploads/1/3/4/3/134319013/038a978de.pdfIn PDF document text
    • https://fevixivosetakub.weebly.com/uploads/1/3/2/6/132681861/lenosovazikatek-watozokisa.pdfIn PDF document text
    • https://xalipifizipig.weebly.com/uploads/1/3/1/3/131379045/7436594.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000077a0.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000077a0.bin)
    • https://cdn.shopify.com/s/files/1/0431/4837/8280/files/sikeguxejis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8004/9344/files/energy_conservation_techniques_for_copd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/1497/4358/files/capas_de_la_atmosfera_ionosfera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6676/4695/files/75691874182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9929/4363/files/saveporif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d251d55e-7fb2-4830-ab39-bcf0e186e884/pisivifozus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f30d4ae4-3f06-4e94-bd36-467d053813ed/kadodimositonuvomonunaro.pdfIn PDF document text
    • https://s3.amazonaws.com/bikikanafopavu/24238561879.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/arduino_mega_2560_pcb_layout.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/zisapaxinipelemabite.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/18206855324.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/gomimuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e00afee5-5f0f-4ff2-aa8c-9cc8eae1815d/40735809215.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9dbc6a0-8b16-4ddd-a6b4-0d7382a717ec/kobapusexusad.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 extracted file (font_00_sfnt_off000077a0.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000077a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77A0 5244 bytes
SHA-256: 91ac883778c0204d910a09f7abf7b162090824092e39057a61e30becf07ef5a5
font_01_sfnt_off0000894b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x894B 10804 bytes
SHA-256: 51aaa0f2ce6726d0a5639539faa7fa170a77d38c4b0ba24de3660c79c4fdbf28