Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2f219b47479927f…

MALICIOUS

PDF

56.9 KB Created: 2020-10-10 17:26:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 00a09217528bed45596599db754f045f SHA-1: 0c97b8f17c23da3a3548c2076d3239b48b31c3b5 SHA-256: d2f219b47479927f3ca4d27d2b050983f4fb04545f4d44de93747ed166d0610e
224 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/strik?keyword=black+desert+kunoichi+gear+guide In PDF document text
    • http://files.reneebolinger.com/uploads/1/3/2/7/132710711/mofewu_kifumaso_vixinamawa.pdfIn PDF document text
    • http://susag.farmersdaughtersk.com/uploads/1/3/2/6/132681812/928861.pdfIn PDF document text
    • http://powijunu.fudamikefashion.net/uploads/1/3/1/3/131384436/luxotujojon_zotenafeweku.pdfIn PDF document text
    • http://files.floridaconferenceecec.com/uploads/1/3/1/0/131069890/wewipit.pdfIn PDF document text
    • https://site-1039207.mozfiles.com/files/1039207/pusex.pdfIn PDF document text
    • https://site-1036675.mozfiles.com/files/1036675/kitifubafereni.pdfIn PDF document text
    • https://site-1043335.mozfiles.com/files/1043335/1573338248.pdfIn PDF document text
    • https://site-1042279.mozfiles.com/files/1042279/letonidajaro.pdfIn PDF document text
    • https://site-1048452.mozfiles.com/files/1048452/zibekupiju.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/a84cfff4-1ade-4270-aeec-fa5d993b763a/tudirunugijowedip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a2ecfe7-e88f-4f68-beff-41b1acdefa2e/rogatasefekibafaziwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cee5d0d8-fcfb-4e73-9e0c-574f1e88d6f4/borudipajosalejovutimonav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77ca21dd-e78b-496c-af8a-03b209223515/lepemadojapodot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc093e94-0977-4d21-badc-2f86dc7d4b4a/ruxoxezekurefovusajigufe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8803/6505/files/24510999408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3215/8116/files/ludemubigagilozebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/2828/7127/files/ohio_high_school_football_rankings_playoffs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5059/7528/files/8871655123.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/3083/1253/files/selenium_webdriver_tutorial.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009641.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9641 5312 bytes
SHA-256: c4c7905d34f08b7eec6a4afa19384f2faf3f2106994cdd00fa32cb8177b6fac4
font_01_sfnt_off0000a838.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA838 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off0000b0c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0C6 10924 bytes
SHA-256: 0fdbf0ef96ea49d0aea1492c6e8debea50f10885f9503181c8628c50ca8f244b