Malicious PDF — malware analysis report

Static analysis result for SHA-256 10fa37ae4eb1bb66…

MALICIOUS

PDF

41.0 KB Created: 2020-08-15 00:52:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4db5c7ac93c948db40c8f0ae2b3663a3 SHA-1: 35555fbe125d73d565b3c37fa528e7ce8cb753ab SHA-256: 10fa37ae4eb1bb66140859d7005331b9acd5d6e9a44c1f65704405534712843e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm with 17 external PDF links, many of which are hosted on Shopify. One of the primary links directs to a known malicious redirector infrastructure at 'ttraff.com'. The ML classifier strongly indicates maliciousness, and the presence of numerous links suggests an attempt to obscure the final malicious destination or engage in SEO manipulation for malicious purposes.

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=barbie+doll+wala+cartoon
    • http://zojarid.the-therapy-centre.com/uploads/1/3/0/7/130776330/8879766.pdf
    • http://nixomumu.cvma49deuce.net/uploads/1/3/0/8/130874359/1fbee942e2.pdf
    • http://tuwir.morganelwell.net/uploads/1/3/1/3/131398140/c35cc.pdf
    • http://files.zareensrestaurant.com/uploads/1/3/0/8/130813757/0486f92e269.pdf
    • http://files.gondorwriterscentre.com/uploads/1/3/2/6/132682070/3269952.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0427/9340/2534/files/woxasexusugije.pdf
    • https://cdn.shopify.com/s/files/1/0432/5670/9273/files/aumentativos_e_diminutivos.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/44603331863.pdf
    • https://cdn.shopify.com/s/files/1/0433/4164/3928/files/90575751654.pdf
    • https://cdn.shopify.com/s/files/1/0438/0141/1744/files/28557353478.pdf
    • https://cdn.shopify.com/s/files/1/0434/2025/4375/files/principle_centered_leadership.pdf
    • https://cdn.shopify.com/s/files/1/0435/5627/4339/files/how_to_insert_date_in_google_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0429/7093/9541/files/71327786574.pdf
    • https://cdn.shopify.com/s/files/1/0431/4936/1314/files/kebubusugunid.pdf
    • https://cdn.shopify.com/s/files/1/0435/5283/3695/files/dezarodarafumi.pdf
    • https://cdn.shopify.com/s/files/1/0434/0590/1991/files/21147203348.pdf
    • https://cdn.shopify.com/s/files/1/0433/9413/8277/files/httpd_conf_example.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_off0000622c.bin
50be361c3c5f77edba11054470e86ec618a1105d9c812194128728b247f74fb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x622C 5036 bytes
font_01_sfnt_off00007367.bin
4129c61c5c336bb47d478734a2b1f6038035b5314f41d380355223a122e8d264		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7367 10424 bytes

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