Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e9565ce1faff911…

MALICIOUS

PDF

42.9 KB Created: 2020-08-08 01:32:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65f76a9fc276135f119cb12b6fa6469e SHA-1: 3027dd41795ae8da50f1bc1d66517f744223c945 SHA-256: 9e9565ce1faff911238d0d591ea9849c95ec790aa37feb68e99b8f89bf2b1ba3
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=estados+financieros+pdf+tesis'. Additionally, it exhibits a PDF link farm heuristic, indicating a large number of external links, with 'https://cdn.shopify.com/s/files/1/0435/4909/8148/files/begepawisegeletim.pdf' being the first listed. The document body contains text related to financial statements, suggesting a lure to entice users to click the malicious link. No scripts were extracted, but the presence of multiple external links and a known malicious redirector strongly suggests a phishing or scam attempt.

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=estados+financieros+pdf+tesis
    • http://warila.taichischoolofgentleexercise.com/uploads/1/3/2/7/132740978/3660826.pdf
    • http://files.appalachianflyandyak.com/uploads/1/3/1/4/131407227/ea9c89dd7587.pdf
    • http://files.olivia-meraki.com/uploads/1/3/1/4/131408204/af17442d.pdf
    • http://kemuk.ho-cheung.com/uploads/1/3/2/6/132682646/wiwogup-xajubudagekipes.pdf
    • http://files.eh20group.com/uploads/1/3/2/6/132696280/7803045.pdf
    • http://dspace.unitru.edu.pe/handle/UNITRU/9205
    • https://cdn.shopify.com/s/files/1/0435/4909/8148/files/begepawisegeletim.pdf
    • https://cdn.shopify.com/s/files/1/0432/7663/2217/files/odia_song_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0429/7188/9817/files/80656845977.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73768917897.pdf
    • https://cdn.shopify.com/s/files/1/0428/2531/8563/files/51567647577.pdf
    • https://cdn.shopify.com/s/files/1/0429/2873/4367/files/7499617122.pdf
    • https://cdn.shopify.com/s/files/1/0433/2313/0009/files/letuxuzajikopagenomezeta.pdf
    • https://cdn.shopify.com/s/files/1/0428/8076/2023/files/9555000476.pdf
    • https://cdn.shopify.com/s/files/1/0437/7182/2229/files/gewab.pdf
    • https://cdn.shopify.com/s/files/1/0431/2281/9233/files/sugufopewuwaveteku.pdf
    • https://cdn.shopify.com/s/files/1/0430/6331/2533/files/2380248037.pdf
    • https://cdn.shopify.com/s/files/1/0429/3145/4119/files/virekemewebaguwazugap.pdf
    • https://cdn.shopify.com/s/files/1/0428/2001/0140/files/robert_mcdonald_derivatives_markets_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/0812/3303/files/faa_far_part_121.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006239.bin
2e3af33663d03ec9a00a2230504bb9e8f98e67bd55fe1d0bcc4ef3f4c4b957b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6239 1696 bytes
font_01_sfnt_off00006a64.bin
1a46d52c01830a078611febb6e58bfa506f8371f78e86e498223d28c3c835061		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A64 5072 bytes
font_02_sfnt_off00007bbb.bin
7cb616d4dbd82527a5feb323d268ff0014fb3ed3b75eddc10e974504f419dac9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BBB 10616 bytes

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