Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff1f62af0dac4139…

MALICIOUS

PDF

47.9 KB Created: 2020-08-31 03:45:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: de807e106b0dfe5787e72b9f19ae183a SHA-1: 2930281a829b42861b4acf9b279da516a6411bf3 SHA-256: ff1f62af0dac41396b3de8e6fad5cdc5de3ef881f14a845bff609ac3446a9d0c
152 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, which is also present in the document body. This link, 'https://ttraff.me/wix?keyword=digimon+world+ds+digivolution', likely leads to a malicious site. The PDF also contains a large number of embedded links, many pointing to Shopify, suggesting a link farm or SEO poisoning tactic to distribute the malicious content. No scripts were extracted, but the presence of the malicious URL is sufficient evidence of a phishing or redirection attack.

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.me/wix?keyword=digimon+world+ds+digivolution
    • https://cdn.shopify.com/s/files/1/0430/8415/2986/files/casio_fx_95ms_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/1404/5341/files/79285769605.pdf
    • https://cdn.shopify.com/s/files/1/0434/8615/0816/files/solidworks_cswp_preparation.pdf
    • https://cdn.shopify.com/s/files/1/0427/6387/8566/files/tabakil.pdf
    • https://cdn.shopify.com/s/files/1/0429/5681/6540/files/bohemian_rhapsody_orchestra.pdf
    • https://cdn.shopify.com/s/files/1/0437/3427/0117/files/nigga_entre_mis_brazos.pdf
    • https://cdn.shopify.com/s/files/1/0435/0056/8736/files/88483534555.pdf
    • https://cdn.shopify.com/s/files/1/0431/6440/1818/files/tokusugezus.pdf
    • https://cdn.shopify.com/s/files/1/0431/5149/1233/files/dogamurat.pdf
    • https://cdn.shopify.com/s/files/1/0434/1438/8888/files/46730898741.pdf
    • https://cdn.shopify.com/s/files/1/0437/5268/5720/files/doxokopurutugoxufuwoseku.pdf
    • https://static.usrfiles.com/ugd/83b1b3_b220cbbf49ec41b3a9a8ddf350998d4a.pdf
    • https://static.usrfiles.com/ugd/3b47cb_334293350eb34b0d8265cb3a0efb6f17.pdf
    • https://static.usrfiles.com/ugd/b8c837_1ceb78c68bbf485ea5bca3884f740ab8.pdf
    • https://static.usrfiles.com/ugd/87a178_90fc1e82b9bf435c89e1b6f5b9a78ea8.pdf
    • https://static.usrfiles.com/ugd/217d68_0274674ceba04459969ac99d4354d447.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_off000068f4.bin
43cfc2aab03fa862e5b5ee6768e9dc3cec39eb60f41daa08e4bad60a4ec7d76f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68F4 6020 bytes
font_01_sfnt_off00007d86.bin
576512098c83ce763b806409ae58f560bff16a5d1f8805eac2b31ea2d5edc589		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D86 5088 bytes
font_02_sfnt_off00008ed7.bin
38329660c5159c627ddaf7c33afab7e662b6d21344efde7081726136ae331a3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8ED7 10420 bytes

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