Malicious PDF — malware analysis report

Static analysis result for SHA-256 237fbf25ed8da430…

MALICIOUS

PDF

88.5 KB Created: 2020-08-06 14:56:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e74597ca0064bb1d8835e09fe2c76cf8 SHA-1: 22c2b3a9c17eb5042cf1c73217f8d5e592e32542 SHA-256: 237fbf25ed8da4309ef0d9ef585c32227498ed60ccb9929bd11579bea8474b0e
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to known malicious infrastructure. The embedded URL, 'https://ttraff.com/pify?keyword=marathi+aarti+sangrah+book+pdf', is a clear indicator of a phishing or redirection attempt. The PDF also contains a large number of external links, many hosted on Shopify, suggesting a link farm for SEO manipulation or to obscure the final malicious destination. The ML classifier strongly flagged this PDF as malicious.

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.com/pify?keyword=marathi+aarti+sangrah+book+pdf
    • http://files.ndsubisonrobotics.org/uploads/1/3/0/7/130776388/wojuzopukesuboxolup.pdf
    • http://files.gibsonspropertyservices.co.uk/uploads/1/3/0/7/130739268/7916a38c.pdf
    • http://files.angelicawireart.com/uploads/1/3/1/0/131070911/11806b6d8ca.pdf
    • http://files.allthingsclown.com/uploads/1/3/1/8/131856338/7307512.pdf
    • http://files.triowestboro.com/uploads/1/3/0/8/130874122/4f45e5c4e8c8f22.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90209356055.pdf
    • https://cdn.shopify.com/s/files/1/0434/2821/6983/files/wewakuzogufiredegegemeba.pdf
    • https://cdn.shopify.com/s/files/1/0431/4877/1488/files/kexejufugabibolozefib.pdf
    • https://cdn.shopify.com/s/files/1/0440/0214/8510/files/github_pull_from_master.pdf
    • https://cdn.shopify.com/s/files/1/0431/5388/3293/files/95079136644.pdf
    • https://cdn.shopify.com/s/files/1/0433/4059/5355/files/mejagipabaxoboxufof.pdf
    • https://cdn.shopify.com/s/files/1/0429/2172/2015/files/sulenowegovulizuvebuzif.pdf
    • https://cdn.shopify.com/s/files/1/0436/0280/4898/files/british_criminal_law_books.pdf
    • https://cdn.shopify.com/s/files/1/0430/9309/8660/files/pesiraxavojejeweve.pdf
    • https://cdn.shopify.com/s/files/1/0430/7946/7162/files/tibia_ip_changer.pdf
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/winagirebofesegasug.pdf
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/fikuwumokawezewixoziv.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_off00011ecc.bin
f9d76c7c627866d17ed521c1e6960db3fa9a3caec54f5fa690780ff3d90d8ec7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11ECC 5480 bytes
font_01_sfnt_off00013171.bin
51b22b0d4796759b28b3df0bd1519f6c92280abd7efe356dd22140998c5e97ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13171 10236 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.