Malicious PDF — malware analysis report

Static analysis result for SHA-256 63c1e9d9124a3134…

MALICIOUS

PDF

47.5 KB Created: 2020-08-25 19:58:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 739e1b082384872003bb9aedff258d4e SHA-1: 20bb571ed34dba7c65ca2de6bb3290837e34d3c6 SHA-256: 63c1e9d9124a31346d6000b7e5f2e8bce0c58fe22386c311c246d989eba3628a
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains a URL that appears to be a lure for "P3d v4 nvidia inspector settings". The PDF_SEO_LINK_FARM heuristic suggests the document is part of a larger link farm operation, likely to distribute malware or phishing content. No scripts were extracted, but the presence of malicious redirectors and the link farm indicate a phishing or malware distribution attempt.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=p3d+v4+nvidia+inspector+settings
    • http://mefozaneb.litturi-photography.com/uploads/1/3/2/7/132710567/rijusiwub.pdf
    • http://files.zodiac-whisperer.com/uploads/1/3/0/8/130874085/bodot.pdf
    • http://dopirod.alaasimahschool.net/uploads/1/3/1/4/131407493/582131.pdf
    • http://zokaf.niacurriculum.com/uploads/1/3/1/0/131070874/midowagelu.pdf
    • http://kitemapi.riverofliferanch.com/uploads/1/3/1/4/131408854/zitugoxifafifiz-vimadeju-zonadux-vadukabiluj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/8799/4792/files/9826880402.pdf
    • https://cdn.shopify.com/s/files/1/0429/7005/4805/files/54761475712.pdf
    • https://cdn.shopify.com/s/files/1/0431/6810/4602/files/detinifes.pdf
    • https://cdn.shopify.com/s/files/1/0438/8644/4699/files/how_to_merge_files_on_mac.pdf
    • https://cdn.shopify.com/s/files/1/0435/1442/9608/files/revojufugiki.pdf
    • https://cdn.shopify.com/s/files/1/0430/3106/8825/files/penndot_address_change.pdf
    • https://cdn.shopify.com/s/files/1/0433/7578/8184/files/16269452040.pdf
    • https://cdn.shopify.com/s/files/1/0440/3855/3765/files/65181623709.pdf
    • https://cdn.shopify.com/s/files/1/0432/8777/3342/files/ceiba_2_software.pdf
    • https://cdn.shopify.com/s/files/1/0428/0143/0695/files/mebikibet.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ade.bin
00ac99aaf590e9f18e1f40bb84662331b5399d172ff24f1b0dd3197122ff925a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ADE 5524 bytes
font_01_sfnt_off00008db6.bin
8b6f2e30dbafb1af8864debb67a9890b06318a6805dfa60dc203e974d5948642		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DB6 10336 bytes

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