Malicious PDF — malware analysis report

Static analysis result for SHA-256 8687be79eff7930b…

MALICIOUS

PDF

49.2 KB Created: 2020-10-21 01:01:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 0e74010c047b90aa2977b3b1e8ea13b1 SHA-1: 4a60a35a2af132eae67613a1db926c4e81034b9a SHA-256: 8687be79eff7930b8a689379bbed53a06a8b6ffcd71fa973b26a9b32fc309e67
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • 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/pify?keyword=mobile+operating+system+pdf+download In PDF document text
    • https://fekudumubaf.weebly.com/uploads/1/3/2/6/132681201/90e2158853dc260.pdfIn PDF document text
    • https://tenikekiso.weebly.com/uploads/1/3/0/7/130775729/df4f39f5d635.pdfIn PDF document text
    • https://vodiwisilob.weebly.com/uploads/1/3/2/6/132681054/lojuguwupax.pdfIn PDF document text
    • https://lixaworone.weebly.com/uploads/1/3/1/8/131871871/vegijotu.pdfIn PDF document text
    • https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/rivuson.pdfIn PDF document text
    • https://xifobosakup.weebly.com/uploads/1/3/2/8/132815359/9129687.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/kezupukono.pdfIn PDF document text
    • https://vogizezadu.weebly.com/uploads/1/3/0/8/130814341/vafepanupe.pdfIn PDF document text
    • https://zulatikuwa.weebly.com/uploads/1/3/0/7/130776211/xefufixalin.pdfIn PDF document text
    • https://pasugewu.weebly.com/uploads/1/3/1/0/131071180/af33acd2e0e92b.pdfIn PDF document text
    • https://vixijusodu.weebly.com/uploads/1/3/0/7/130776714/mijodikarisej.pdfIn PDF document text
    • https://mapipuluzobeb.weebly.com/uploads/1/3/1/3/131398440/gewug_lavegeto.pdfIn PDF document text
    • https://tiwilofudux.weebly.com/uploads/1/3/1/6/131606348/ranunufobudo_subosexibobavak_regirizusibanom.pdfIn PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/1918150.pdfIn PDF document text
    • https://botubadixebom.weebly.com/uploads/1/3/1/4/131407995/1735007.pdfIn PDF document text
    • https://gozofuma.weebly.com/uploads/1/3/0/8/130874065/repuvot.pdfIn PDF document text
    • https://temazojirilezin.weebly.com/uploads/1/3/2/3/132302863/faluji.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/sixukejomiwewanage.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3826/8318/files/dent_mod_apk_unlimited_money.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6422/1077/files/riccar_central_vacuum_reviews.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9603/9833/files/tutorial_on_variational_autoencoders.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/fekajozokebuzedegusup.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/tofipamobugotedo.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/kidutuwuretibibazukogati.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/redefuzike.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/rustoleum_cabinet_transformations_instructions.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_off00007395.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7395 5488 bytes
SHA-256: 19f6867d2575e172439e4f88d67db7a98acdfc3cc9f88de9e5688c8b2c019508
font_01_sfnt_off00008632.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8632 10144 bytes
SHA-256: 3cb0ffe7a1241616aae71e6e532a86e94f23f8f2c25db5075b36233dc599fc8c
font_02_sfnt_off0000a89f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA89F 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e