Malicious PDF — malware analysis report

Static analysis result for SHA-256 025d1abbb84ea5af…

MALICIOUS

PDF

48.8 KB Created: 2020-08-31 03:12:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2dc8e115fec6f1eec3418bb9e5fccbaa SHA-1: 0cd91d6ff284a0be3f8c32b8f11fd5137c7f516f SHA-256: 025d1abbb84ea5afc7cbc03b95d0042655da086f99b414b52d69561026b94d0a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO manipulation tactic. One critical heuristic indicates that the PDF links to a known malicious redirector infrastructure at 'ttraff.cc'. This suggests the document is designed to funnel users to malicious content, likely for phishing or malware distribution.

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.cc/wix?keyword=teoria+del+conductismo+de+watson
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/2128/7080/files/bose_soundsport_free_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/5082/6919/files/92596299524.pdf
    • https://cdn.shopify.com/s/files/1/0432/4845/1739/files/zedezojasuxivalinodegemuw.pdf
    • https://cdn.shopify.com/s/files/1/0433/7913/0531/files/fudikelotepawelodenu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5106/5243/files/94863619284.pdf
    • https://cdn.shopify.com/s/files/1/0436/1243/8685/files/area_of_circles_worksheet_kuta.pdf
    • https://cdn.shopify.com/s/files/1/0430/5341/6601/files/bozutosugonezo.pdf
    • https://cdn.shopify.com/s/files/1/0437/3354/9205/files/building_construction_and_maintenance_engineering_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/1297/2963/files/35244174749.pdf
    • https://cdn.shopify.com/s/files/1/0461/7591/2090/files/mandrill_template_loop.pdf
    • https://cdn.shopify.com/s/files/1/0434/8795/3053/files/zirejaronina.pdf
    • https://cdn.shopify.com/s/files/1/0432/9239/3640/files/buku_rangkuman_biologi_sma.pdf
    • https://cdn.shopify.com/s/files/1/0434/6868/5464/files/najorararepijajef.pdf
    • https://static.usrfiles.com/ugd/b8c837_d675eaf39e244b11959097bbeabd8749.pdf
    • https://static.usrfiles.com/ugd/9757e7_7e4f85324dd148b5b79854cb4a26f8ba.pdf
    • https://static.usrfiles.com/ugd/9e41f0_c0b74316eddd4d84b758a5193cba9bcc.pdf
    • https://static.usrfiles.com/ugd/b8c837_ee9db509fe3b41b8b98ae1688667e26e.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007e23.bin
01fc7afb45d695c25d83c06caa22c6395a2ef8e7513201a3454c897721bee636		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E23 5128 bytes
font_01_sfnt_off00008f84.bin
26a3299d0e2366f8684ac2c3630b8aa1045ed5d49cf99694886299bfc9ba0e25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F84 11300 bytes

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