Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e2c8950839f688c…

MALICIOUS

PDF

63.2 KB Created: 2020-10-15 23:18:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 715a4884c030c5ba5ca14c12f6f3a61b SHA-1: 410fbea71c48c7cf080bf8d07857bd61483ce20b SHA-256: 7e2c8950839f688c214e3b5448865ff46551a8273c8faa4e589434079325a564
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://gettraff.ru/123?keyword=house+flip+mod+apk+2.2.0 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366659/normal_5f88765b05827.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372074/normal_5f88900588dd0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366311/normal_5f8891b8d73f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366402/normal_5f87212fbdfd3.pdfIn PDF document text
    • https://site-1044053.mozfiles.com/files/1044053/bosuladidovuzo.pdfIn PDF document text
    • https://site-1044018.mozfiles.com/files/1044018/momogoxofo.pdfIn PDF document text
    • https://site-1038529.mozfiles.com/files/1038529/nowumimipipa.pdfIn PDF document text
    • https://site-1040359.mozfiles.com/files/1040359/lolifadizuvivumapanomuzeg.pdfIn PDF document text
    • https://site-1039906.mozfiles.com/files/1039906/felixudum.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/tunitulo.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/3731638.pdfIn PDF document text
    • https://duxixujojive.weebly.com/uploads/1/3/0/7/130739103/2763b8545fbc8.pdfIn PDF document text
    • https://tikedamo.weebly.com/uploads/1/3/1/4/131453682/retojadepezev.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366008/normal_5f871d691b9ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366312/normal_5f8737db02413.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366331/normal_5f87630071a63.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367268/normal_5f8827dd0d4e0.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/15f750e1-3a91-4403-a495-ddca775596a7/mogiwef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f68d1c21-ae07-4d83-a5b7-607bbd1ea4fd/57368066042.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/107241ad-b53a-459d-9611-fef2aee459c7/wugoxewudosetubexajal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/385e6ea3-8b9d-4049-a9ce-62d95d1f4a76/sipox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0b51cfe-ed6f-420a-a64b-9af306689b2c/11631395215.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5252/6489/files/mh_abrams_glossary_of_literary_terms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5043/4211/files/80633009055.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70E5 3068 bytes
SHA-256: 73557fd4b9a2faa9f31fa694fff4ee7b49963c6428b4887cd33583d0d4a3c7ed
font_01_sfnt_off00007baa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BAA 5420 bytes
SHA-256: 14d1aa23fb2f92ac24b11b6e291d3ae12ac3ea4fe6111778ba43c4aecf1a4b25
font_02_sfnt_off00008e0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E0A 10860 bytes
SHA-256: 968ccbe09f7cc458e334e51c929e97bc83218e6ff180e6a1af1ffd4c0d31e4be
font_03_sfnt_off0000b2a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2A1 10924 bytes
SHA-256: b68096b81ac1b0e8e7b127625cfe53023826f21d8e01813aa7c3029c9a66ff35
font_04_sfnt_off0000d827.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD827 16356 bytes
SHA-256: bfc95539a296864b93145af8f8613b9634f51b3882d0c87dbad75e90a25f2970