Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e399cddb207dad5…

MALICIOUS

PDF

45.3 KB Created: 2020-10-19 15:16:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 4dc149e2d17162efe19fc17810b89d03 SHA-1: 62c14535aa452db667e3b9889a0823ba673c920d SHA-256: 9e399cddb207dad5816c11f9c47b0ec5c844723f92257df4d20e9535b20b464b
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://ggtraff.ru/123?keyword=descargar+apk+netflix+mod In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367313/normal_5f8a1705e2a9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369305/normal_5f89b192b611f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379489/normal_5f8c95bec9eff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371783/normal_5f887425c0aea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381294/normal_5f8d01d35fed3.pdfIn PDF document text
    • https://rabugotekinevod.weebly.com/uploads/1/3/1/8/131871666/sijubilexuzut.pdfIn PDF document text
    • https://remewizefo.weebly.com/uploads/1/3/1/8/131856163/jezowogabusot_dajuxax_peloxidinivolup_foxilabeleturak.pdfIn PDF document text
    • https://megadezatesaram.weebly.com/uploads/1/3/0/7/130776649/3957612.pdfIn PDF document text
    • https://lipowuripipu.weebly.com/uploads/1/3/1/3/131378852/7db071bf89ddb.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/e32c0605-657a-488e-8a44-4f7d8a877949/vawobuvilexazokubofibi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d060b06d-796e-475e-8b24-08916ffc960f/lajolijefe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/173d7d76-7be7-4103-a470-3640c5150895/79953401468.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98eafb79-c01e-4b4d-910a-9940e8f9c6d9/dudapupixi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7877/9047/files/tefegavutov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5663/5816/files/scripps_regional_spelling_bee_2020_word_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/2743/0059/files/selective_laser_sintering_sls.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2167/2356/files/693764187.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/8826/8449/files/46265517172.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4060/2269/files/latest_android_phone_under_70000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/1392/9630/files/70124702215.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9689/1807/files/shopmate_300_dx_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eeb0c9a1-3d4a-4a51-9071-09be3882dc40/92680923776.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/466a7c03-bcc9-45db-9070-155f5824b2c2/budivimijivarom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/327813c1-318a-4727-b7b3-6e0e21f67ca6/vepegurepunapesagowevoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b37de3a5-fb36-4aca-8d63-cffccdfd41a4/2000_jeep_wrangler_owners_manual_dow.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_off0000724b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x724B 5608 bytes
SHA-256: 5d147be357288a12d2db14b84d6bf21974fd8c51521e63854b860d4fe2803b8b
font_01_sfnt_off00008548.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8548 10144 bytes
SHA-256: 7da40f494c094869552aa9f177f9a0dc903773811b83c9a847c145cae45e58d9