Malicious PDF — malware analysis report

Static analysis result for SHA-256 efdd2536fa28940e…

MALICIOUS

PDF

63.9 KB Created: 2020-10-26 18:00:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 362af3e9b0f85a3afa87ac8180037235 SHA-1: 4830e809c2b759943e040ca83a7350340cdd7621 SHA-256: efdd2536fa28940e08807cf88973e5b4229668c506d9dd294f4ccd227076263d
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://ttraff.me/123?keyword=electromagnetic+and+static+relays+pdf In PDF document text
    • https://votarozoxanobo.weebly.com/uploads/1/3/4/3/134315144/5480134.pdfIn PDF document text
    • https://bebamewikirebu.weebly.com/uploads/1/3/0/8/130874540/xuruwozagajog_duwewatuk_jogin.pdfIn PDF document text
    • https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/livetusova.pdfIn PDF document text
    • https://kelobutino.weebly.com/uploads/1/3/0/9/130969458/zegagoragek_nepumudusoku_woguxasar.pdfIn PDF document text
    • https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/5162795.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/nemavekor_juden.pdfIn PDF document text
    • https://jewajufigojoxi.weebly.com/uploads/1/3/1/4/131438211/mobafewod.pdfIn PDF document text
    • https://kizuwapeputatu.weebly.com/uploads/1/3/4/3/134375201/a9123b2569399.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/beparinunij.pdfIn PDF document text
    • https://gogebuzavoriro.weebly.com/uploads/1/3/2/6/132681212/8645454.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365541/normal_5f8708b25a689.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367300/normal_5f8a7b2e45c80.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384154/normal_5f947856e55b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383467/normal_5f943463ee475.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368996/normal_5f89dfa0c2325.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/a0c6c481-1b5e-4855-b73d-4c7953969647/shon_harris_cissp_7th_edition_do.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62451149-0504-49ff-8715-10788ba785c6/maveminalomefa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6446d9e4-c28d-4fb7-84e5-f92a446776e4/hum_royenge_itna_hame_maloom_nahi_tha_mp3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70996362-833d-42bd-95e9-bc200cc91eab/waynesboro_va_real_estate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efc7c5b5-2187-4396-8112-ea9e88031df2/lotonifemak.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/74506784740.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/95871334676.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7352/8502/files/54776981909.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/8034/9344/files/timberland_baby_size_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0319/9138/files/hercules_game_1997_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/5322/3588/files/memorial_middle_school_south_portland.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0152/0023/files/nibatimexakomokuj.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_off0000bb29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB29 5532 bytes
SHA-256: 97b04f81ad378607d8aad4319a0d86c445941928d9673ada5a3df9a38d99ad82
font_01_sfnt_off0000cde8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDE8 10500 bytes
SHA-256: a7d803ec46220382e0774dc0aa2f9fd2c9e793c35f0ad84f201b4bf46dafa9c8