Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c1daeb8a2e890c2…

MALICIOUS

PDF

45.5 KB Created: 2020-10-15 01:27:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: fbfc47a73d45a27492b8aaaef4c94ad0 SHA-1: 5c60d2ba6ef1de9470c106517569b9e8f3829dbf SHA-256: 6c1daeb8a2e890c201b40652ef99fd955839deef5ab0818b6831dd3ab011f199
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://cctraff.ru/strik?keyword=flight+pilot+simulator+download+apk In PDF document text
    • https://jamuseramomuf.weebly.com/uploads/1/3/1/8/131871426/dagowokujifemonul.pdfIn PDF document text
    • https://xumogimunosu.weebly.com/uploads/1/3/1/6/131607683/d0ed3a08eb.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/44d87feaf8ee.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/movew.pdfIn PDF document text
    • https://pepotoxuxomupav.weebly.com/uploads/1/3/1/4/131483830/99774e40eb.pdfIn PDF document text
    • https://site-1040312.mozfiles.com/files/1040312/fumigosuji.pdfIn PDF document text
    • https://site-1043053.mozfiles.com/files/1043053/botixexonojativowewiboboj.pdfIn PDF document text
    • https://site-1038605.mozfiles.com/files/1038605/powujixoxeja.pdfIn PDF document text
    • https://site-1040567.mozfiles.com/files/1040567/fezurisanodomajodexeboduz.pdfIn PDF document text
    • https://site-1040277.mozfiles.com/files/1040277/26400016236.pdfIn PDF document text
    • https://site-1038412.mozfiles.com/files/1038412/bopafup.pdfIn PDF document text
    • https://site-1040203.mozfiles.com/files/1040203/voromivilefopobisu.pdfIn PDF document text
    • https://site-1039505.mozfiles.com/files/1039505/paxuwufesavorevo.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/b29bd530-511c-400a-b4db-35037e660486/66202578009.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d85ca8c4-c863-4280-8c77-45e5f289cf8e/zidumetitop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ea124fd-b5f1-4569-816b-a78b465dc69c/fijibavivupiruga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed9b1e21-700f-4731-b4cf-a63aa3e93fb3/36505166144.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39b0c5f2-1afd-441c-8d80-9f6b00a57dfb/gosiwubekazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/6210/8582/files/peter_grill_to_kenja_no_jikan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6856/3351/files/sipewada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8855/9782/files/alpine_swamp_cooler.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5970/7037/files/56567484655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5150/7112/files/70949574867.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_off000072c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72C3 5484 bytes
SHA-256: 696367c41582bd2d641ea29fbdeb8fc0a201f27f9d991faeb28a6d5fc3b63723
font_01_sfnt_off0000855d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x855D 10180 bytes
SHA-256: ad6759930cec7b0de558682fedf7f92622a20d906c16bc0e6412bc5df1d3c979