Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae6c642d13dcd61e…

MALICIOUS

PDF

49.3 KB Created: 2020-10-25 06:41:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 37593aee86031bc08d0b972955ca33ef SHA-1: e8d713392b249f56d0e19480c9475f6d4e40aeaf SHA-256: ae6c642d13dcd61e9a721266b33cc95ef9c204fa3873cc1b61e9d66f65cd4e94
184 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.
  • 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.link/aws?keyword=abortus+imminens+adalah+pdf In PDF document text
    • https://vonolorijamitef.weebly.com/uploads/1/3/4/4/134452045/viwaseve_kotevomo_tidexesitepobo.pdfIn PDF document text
    • https://kikuriniwabutip.weebly.com/uploads/1/3/4/4/134440093/ce2d1e0.pdfIn PDF document text
    • https://bilimetib.weebly.com/uploads/1/3/4/4/134435282/rikuzojixi.pdfIn PDF document text
    • https://siregudak.weebly.com/uploads/1/3/0/7/130738759/waxodo-duguwena-revugoraf-waxogili.pdfIn PDF document text
    • https://guxitubekin.weebly.com/uploads/1/3/4/2/134267073/6439350.pdfIn PDF document text
    • https://fixupusojorulu.weebly.com/uploads/1/3/4/4/134438709/dunibetumivifowep.pdfIn PDF document text
    • https://saxexowiki.weebly.com/uploads/1/3/0/9/130969873/2247221.pdfIn PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/nifowetese.pdfIn PDF document text
    • https://vixeroniwemeful.weebly.com/uploads/1/3/0/7/130740086/6450827.pdfIn PDF document text
    • https://xexovelez.weebly.com/uploads/1/3/0/8/130813416/8728981.pdfIn PDF document text
    • https://kelobutino.weebly.com/uploads/1/3/0/9/130969458/4599622.pdfIn PDF document text
    • https://kesevaze.weebly.com/uploads/1/3/1/3/131383297/2624916.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007440.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007440.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0000a91a.bin)
    • https://s3.amazonaws.com/tapexiw/bizhub_c368_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/7100088885.pdfIn PDF document text
    • https://s3.amazonaws.com/bevekizadoxuj/gedipafujugebimudaronu.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/borel_measurable_function.pdfIn PDF document text
    • https://s3.amazonaws.com/zedudo/ldc_answer_key_2018_12_august.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd5b7ca0-41c4-4420-947e-a8aba5acefcf/puligem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3906bc2c-b52b-4b22-a36d-dd07f536fb4d/79090358820.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ef98e56-fd7f-4a65-83bc-d96d08a653f9/7702411081.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d848165d-996a-4531-9642-783a5ce957f9/skinny_love_piano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d60a25b4-8e52-4422-b1ca-abd0d111a07b/kisifaxoxorogesepibek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9114/1801/files/chapter_3_test_answers_algebra_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6645/8266/files/4_variable_k_map_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/9754/6663/files/family_feud_powerpoint.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 extracted file (font_00_sfnt_off00007440.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007440.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7440 5292 bytes
SHA-256: 2478f3586203874aa0c13d02332a2bcf1646193d09f63895d5ff491fb7ac6341
font_01_sfnt_off00008601.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8601 10256 bytes
SHA-256: 2c4b8dd30288798adb2b2262181b2ad01b5433f2c47d9b26185434b6ea9cd0a8
font_02_sfnt_off0000a91a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA91A 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378