Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a769eeb7eafc996…

MALICIOUS

PDF

47.0 KB Created: 2020-09-23 02:26:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d7ff271ea38ab48925ce928dda8531dd SHA-1: 2dcc471e68ac609fbae041e6cec055ba6eaeba4e SHA-256: 8a769eeb7eafc9960073a4c10cf41976a2912988bab5d5c5d82fb3abe40caa8a
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.me/wix?keyword=eternium+mage+and+minions+apk+%252B+data In PDF document text
    • http://zemepo.kyocreations.com/uploads/1/3/1/8/131856214/zudumazesagib.pdfIn PDF document text
    • http://mefusox.twofishmoon.studio/uploads/1/3/0/8/130814761/batodivabiduvuz-dadaluwenazugu-waxeniripomi.pdfIn PDF document text
    • http://files.downtowndairyqueen.com/uploads/1/3/2/6/132681479/dijugabelar.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://7aed34cf-02b7-46e8-a81f-fca6a5fe1fed.filesusr.com/ugd/451461_695a8dab9ce949df8d6c4e61c37937f0.pdf?index=trueIn PDF document text
    • https://e855879c-d038-4a90-a5c6-5848b57346ce.filesusr.com/ugd/21e6f2_ff58204e70ec42048ec3d6c5b3dec223.pdf?index=trueIn PDF document text
    • https://e600a899-e433-426e-a7f8-96975cd2b35d.filesusr.com/ugd/40512e_24cdf6b9709341f7a106553a1c00e070.pdf?index=trueIn PDF document text
    • https://db02a958-43ce-4707-b9f8-8f1893ddd5d0.filesusr.com/ugd/2a2e94_ad0257430537450187849a81143b0fdc.pdf?index=trueIn PDF document text
    • https://fbe6dc29-b679-4547-b259-e8d82cba54ce.filesusr.com/ugd/83e584_786c925152e8446c9f34927c3558a01c.pdf?index=trueIn PDF document text
    • https://5e53241b-1b6a-4b73-a917-ed2431a5ade3.filesusr.com/ugd/baef12_cf7cc6d144b0493bbaf24b9318dd7633.pdf?index=trueIn PDF document text
    • https://5572d94a-50e0-48cd-917e-d23fd6a32b0a.filesusr.com/ugd/353d00_b4695254ac5a4c6cac84202c9d55e5c2.pdf?index=trueIn PDF document text
    • https://82dc8c37-2865-43c7-a7b5-d437cce36690.filesusr.com/ugd/0dcf4b_44758e3f808c4ee7993aa76c21eb9121.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2722/4986/files/epson_xp-_820_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7851/6885/files/pabivivotosiwalugukumixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/8042/5112/files/travis_scott_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0631/2098/files/amilla_fushi_fact_sheet.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_off000078da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78DA 5268 bytes
SHA-256: 8b0eb5b801d7c57395c55aafd929df5662d5d3bb84e1701348e638a828918809
font_01_sfnt_off00008ab8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AB8 10768 bytes
SHA-256: c8c8fb3fc25d50536c76376a03339a0a44e1825142893aebb1dfe5f129b861db

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