Malicious PDF — malware analysis report

Static analysis result for SHA-256 3068596dd400af32…

MALICIOUS

PDF

32.8 KB Created: 2020-08-12 20:39:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2a9e780a1c1574583bee9b706ac14285 SHA-1: 56080024b3bcd055c82e63cac9cfff5bd13f23eb SHA-256: 3068596dd400af323a25e87c81c9b9371951a4fba93744d978e3339793a124d1
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, pointing to `https://ttraff.com/pify?keyword=belden+fire+alarm+cable+catalogue+pdf`. This URL is designed to lure users by appearing to be a legitimate catalogue, but it redirects to malicious infrastructure. The document also contains a large number of embedded URLs, many hosted on `cdn.shopify.com`, suggesting a link farm or SEO poisoning tactic to improve search engine visibility for malicious content. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.com/pify?keyword=belden+fire+alarm+cable+catalogue+pdf
    • http://files.xqztfloral.com/uploads/1/3/1/4/131482853/ff40e.pdf
    • http://files.babygotbackbrace.com/uploads/1/3/0/7/130739239/13250.pdf
    • http://ligozana.natalieariannebaack.com/uploads/1/3/1/6/131606201/wofebulivigapobema.pdf
    • http://files.perrymaxwellsociety.com/uploads/1/3/0/7/130738928/7304455.pdf
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/nelujofukatepodevawex.pdf
    • https://cdn.shopify.com/s/files/1/0435/5181/7879/files/d_d_dungeon_master_s_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nasodidupafulad.pdf
    • https://cdn.shopify.com/s/files/1/0441/2496/2968/files/creative_writing_ideas.pdf
    • https://cdn.shopify.com/s/files/1/0432/8321/8588/files/meio_ambiente_e_sustentabilidade_livro.pdf
    • https://cdn.shopify.com/s/files/1/0430/4178/3959/files/gupolulemitemoxogot.pdf
    • https://cdn.shopify.com/s/files/1/0430/9064/1045/files/pinoviduga.pdf
    • https://cdn.shopify.com/s/files/1/0431/0489/5143/files/31781244592.pdf
    • https://cdn.shopify.com/s/files/1/0438/6642/3456/files/tizerupugatuxexupogu.pdf
    • https://cdn.shopify.com/s/files/1/0435/8003/1139/files/honeywell_pro_series_thermostat_manual.pdf
    • https://cdn.shopify.com/s/files/1/0439/0024/0024/files/art_of_worldly_wisdom_baltasar_gracian.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000044f6.bin
0040908448f6a77fbfa87890cfd06aa6ec7afc3a29ab6ea3c1a27f0538ada4b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x44F6 5488 bytes
font_01_sfnt_off00005781.bin
b8d01baf827762484fa59930a73239adf8cd40f853a575cd1a9babe43fddc77a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5781 9048 bytes

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