Malicious PDF — malware analysis report

Static analysis result for SHA-256 c863fffd1daa45fb…

MALICIOUS

PDF

64.2 KB Created: 2020-08-09 07:08:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8339b6d2a2d96d058916c273cfaaf97f SHA-1: 728b688692eceb1cfcd4ff731161b7beae95beeb SHA-256: c863fffd1daa45fb242d895903d3f5e0ee933ce54df052a98c070d8eca3de1fc
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector identified by heuristics. This suggests the document is designed to redirect users to malicious content, likely for phishing or malware distribution.

Heuristics 3

  • 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.
  • 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.cc/pify?keyword=alimentacion+saludable+y+actividad+fisica+pdf
    • http://files.zatoluxury.com/uploads/1/3/1/3/131398335/sudasidop.pdf
    • http://files.burchfieldhomestead.com/uploads/1/3/1/3/131398250/8b0b4826b2763.pdf
    • http://files.silverpalmspta.com/uploads/1/3/1/0/131070212/7b0de46.pdf
    • https://cdn.shopify.com/s/files/1/0431/1177/6416/files/femosivawagenejurina.pdf
    • https://cdn.shopify.com/s/files/1/0430/2739/8807/files/pretest_biochemistry.pdf
    • https://cdn.shopify.com/s/files/1/0431/5666/8573/files/40141689541.pdf
    • https://cdn.shopify.com/s/files/1/0429/9191/1066/files/legato_carpet_tile.pdf
    • https://cdn.shopify.com/s/files/1/0447/2055/4138/files/drake_all_me.pdf
    • https://cdn.shopify.com/s/files/1/0435/2681/5903/files/79128697809.pdf
    • https://cdn.shopify.com/s/files/1/0430/8277/6725/files/ligitopusesixiguxapa.pdf
    • https://cdn.shopify.com/s/files/1/0433/4610/0392/files/adda247_general_awareness_book.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/24375498268.pdf
    • https://cdn.shopify.com/s/files/1/0430/5040/1943/files/65th_bpsc_question_paper_set_a.pdf
    • https://cdn.shopify.com/s/files/1/0432/0496/8603/files/jebuwejovu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1425/7815/files/hannah_montana_season_4_episode_14.pdf
    • https://cdn.shopify.com/s/files/1/0432/5982/2244/files/2125652292.pdf
    • https://cdn.shopify.com/s/files/1/0435/7737/6936/files/84954729987.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_off0000b9ee.bin
8050ab97d439a3ca18f4c0fbe881926734c5c6f37e41636371e062f6b4fef165		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB9EE 5496 bytes
font_01_sfnt_off0000cc98.bin
17dd3e0674542eacbba5863d8fad5cd18a3eed92aaea9ecd55f77e0ce220ebcf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC98 11348 bytes

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