Malicious PDF — malware analysis report

Static analysis result for SHA-256 2de5a77f4b868bee…

MALICIOUS

PDF

40.8 KB Created: 2020-09-02 20:29:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85d7622ea51f7227aa9f48b8cbf7aab5 SHA-1: 1b52f29eb03e1b49fb0e4c875ef9408fe24f4772 SHA-256: 2de5a77f4b868bee856235966f7d648146e8508ffd1ab3d2a53ad2ec0d6c7af7
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=applicant%2527+s+guide+epo', which is flagged as malicious. This suggests the document's primary purpose is to lure users to a malicious site. No scripts were extracted from this sample.

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=applicant%2527+s+guide+epo
    • https://static.usrfiles.com/ugd/b8c837_172efa5ee21f4ac49c4e42bfffa82872.pdf
    • https://static.usrfiles.com/ugd/d5cf39_1f351357fd484834b5c5e260837614ff.pdf
    • https://static.usrfiles.com/ugd/1be480_7380145ea6a241a7bf2c59460a7bbbae.pdf
    • https://static.usrfiles.com/ugd/7041e4_a05c9386a36a4434940e2aadc9b40114.pdf
    • https://static.usrfiles.com/ugd/b8c837_32cbcedc46614bba9b707882b1501de3.pdf
    • https://cdn.shopify.com/s/files/1/0463/6200/1563/files/78036116643.pdf
    • https://cdn.shopify.com/s/files/1/0431/3884/2779/files/63627089541.pdf
    • https://cdn.shopify.com/s/files/1/0434/2261/3669/files/vekupizuzezolek.pdf
    • https://cdn.shopify.com/s/files/1/0433/0173/2520/files/jetamuzerel.pdf
    • https://cdn.shopify.com/s/files/1/0429/2214/8003/files/pibedusuwa.pdf
    • https://cdn.shopify.com/s/files/1/0429/7192/2591/files/92645916097.pdf
    • https://cdn.shopify.com/s/files/1/0430/2703/8369/files/clause_49_of_listing_agreement_2020.pdf
    • https://cdn.shopify.com/s/files/1/0438/4794/2304/files/free_online_poker_games_with_fake_money.pdf
    • https://cdn.shopify.com/s/files/1/0437/1018/5621/files/bed_sheet_sizes_uk_inches.pdf
    • https://cdn.shopify.com/s/files/1/0449/1811/2423/files/83564875948.pdf
    • https://cdn.shopify.com/s/files/1/0438/6455/5675/files/nigetanuvewov.pdf
    • https://cdn.shopify.com/s/files/1/0430/9218/1153/files/maxezivizawaf.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_off000061c1.bin
53374d1423304a9acddfc41854bb3a6474bcc289d41a8b2f8bca9034a7ab2686		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61C1 5168 bytes
font_01_sfnt_off0000736e.bin
0c35eb24bd25971fd89f9d23a87142ea5cfc3cebd43ab81f0b4ff7def3b97b36		 pdf-font-stream PDF embedded font (sfnt) at offset 0x736E 10180 bytes

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