Malicious PDF — malware analysis report

Static analysis result for SHA-256 233b87c1558a8301…

MALICIOUS

PDF

41.7 KB Created: 2020-10-05 05:15:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 195be6877f029b5b30dd0602b98ad7d2 SHA-1: b1e19969997fde1bfc69f271b75a147e9d737c4e SHA-256: 233b87c1558a8301813ec783009d4c4a5440da096e473363f89b30aa187e0507
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.club/pify?keyword=nespresso+aeroccino+plus+manual+pdf In PDF document text
    • http://lisoje.aiasohiostate.com/uploads/1/3/2/6/132682533/parake-pipajifufox-giguvaki-fodikilem.pdfIn PDF document text
    • http://files.matthewsmith-furniture.co.uk/uploads/1/3/1/4/131453682/rapalap.pdfIn PDF document text
    • http://fatako.anyakunze.com/uploads/1/3/1/4/131438873/voxuviwipivimux_tolugejulebeso.pdfIn PDF document text
    • http://files.leadershipcentersw.org/uploads/1/3/2/3/132302754/9730967.pdfIn PDF document text
    • http://dabafogu.steelcamel.com/uploads/1/3/0/8/130874592/bijakazakitug_xefijejipepuz.pdfIn PDF document text
    • http://files.worldreadyschools.com/uploads/1/3/0/9/130969426/2226387.pdfIn PDF document text
    • http://files.heatherquilters.org.uk/uploads/1/3/2/8/132815882/fesawevo.pdfIn PDF document text
    • http://wunitepo.beingwellagingwell.com/uploads/1/3/1/3/131383544/xuremevarumozif.pdfIn PDF document text
    • http://files.innotrope.com/uploads/1/3/1/0/131070062/e1c307.pdfIn PDF document text
    • http://rexox.familyforeveranimalfoundation.org/uploads/1/3/1/4/131483603/padino-vimifusufaf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4641/1673/files/kizosiverefejobe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6413/0725/files/the_triumph_of_time_and_truth.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0133/8266/files/read_the_bible_in_90_days.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/8668/3554/files/73104575079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3803/8426/files/toefl_writing_sample_essays.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c861f61-c663-43ba-a222-8989dff85c7d/mekuso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac54d34b-1c20-490c-aeec-35fcf8ce5b31/wumedom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c35ac88f-d634-4016-93ad-956fd89aa2dd/diwepefoparojejazemedupi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c80f67db-02dd-4c34-9be6-e31c613bca2b/gaviritizib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b2f0f8c-fb97-4d10-bba3-8789430b2f4f/6099475782.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_off0000653b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x653B 5268 bytes
SHA-256: 242280ebad6d2f50d0a41d86d6eae406d124ce2b4880be42775ae872bdbb0e7a
font_01_sfnt_off00007711.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7711 10096 bytes
SHA-256: 8f82daa54a2a6d17bae2251e3c3fde72723c33235c6bb8e6d46bc0a5448cade0

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