Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cb672e77ce7be40…

MALICIOUS

PDF

36.3 KB Created: 2020-08-25 17:17:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b642d8025fc940a0dbaa7e5b3c356cf SHA-1: 8e62e6d25cb484f0906aa79a7d6c1f373879a52e SHA-256: 3cb672e77ce7be408bc6b7b644d1546255c9223d847ff16da4ae2e4eb64607f0
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=akanamali+remix+music'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on shopify.com. The document body, though heavily obfuscated, contains the same malicious URL and a benign-looking PDF link, suggesting a lure to disguise the malicious redirect.

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.com/pify?keyword=akanamali+remix+music
    • http://zupakob.crowdedcloset.org/uploads/1/3/1/4/131406068/320805.pdf
    • https://cdn.shopify.com/s/files/1/0432/1820/6887/files/din_en_iso_898_1.pdf
    • https://cdn.shopify.com/s/files/1/0428/8810/2051/files/afterbirth_plus_items.pdf
    • https://cdn.shopify.com/s/files/1/0432/5477/5970/files/28112361990.pdf
    • https://cdn.shopify.com/s/files/1/0443/8127/4278/files/witch_yoo_hee.pdf
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/69063939637.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12091312038.pdf
    • https://cdn.shopify.com/s/files/1/0432/5841/3216/files/abduction_movie_2019.pdf
    • https://cdn.shopify.com/s/files/1/0436/6857/0265/files/castrol_edge_5w30_c3.pdf
    • https://cdn.shopify.com/s/files/1/0434/5462/7993/files/reading_comprehension_strategies_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/79123306636.pdf
    • https://cdn.shopify.com/s/files/1/0437/8096/4509/files/jazusutaburejupenopideki.pdf
    • https://cdn.shopify.com/s/files/1/0435/7275/6648/files/site_reliability_engineering_how_google_runs.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/92532979764.pdf
    • https://cdn.shopify.com/s/files/1/0439/3048/4904/files/25776230139.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_off00004cd9.bin
d555e9e1a6efd083810bca9b1c306025b450ea144e9916b38b2db2c1ef266614		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4CD9 5068 bytes
font_01_sfnt_off00005df5.bin
2a069227b3439c85a25b75a6c8b91986df20294298f2954f865e5118c9fd9254		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF5 12176 bytes

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