Malicious PDF — malware analysis report

Static analysis result for SHA-256 8468b2d2b1323931…

MALICIOUS

PDF

42.8 KB Created: 2020-08-25 01:03:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6322be5d3209ffb8608d9cf3347388ba SHA-1: 41a91ebdbc59650413909955c59a55bf360535ad SHA-256: 8468b2d2b13239311abb7d49e6ab06e9aa3a0fe415959f1d75cbed0b8fde0725
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded external links, with a critical heuristic firing indicating a link farm. One of the primary links directs to a known malicious redirector service, 'ttraff.cc', suggesting a phishing or malware distribution attempt. The document body itself is largely unreadable binary data, but the presence of the malicious redirector URL is the strongest indicator of malicious intent.

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=dental+cementum+pdf
    • http://files.carriereiling.com/uploads/1/3/1/4/131408970/paxide-belixeke-pizitemowoxuwib-sapepuwesir.pdf
    • http://jefudasi.ironstonemeadery.com/uploads/1/3/1/3/131383613/8050d5.pdf
    • http://kojofu.mediocreatbest.net/uploads/1/3/0/7/130775593/d1049.pdf
    • http://files.airmicrochip.com/uploads/1/3/0/8/130873826/6eb8ce3bd60e1b.pdf
    • https://cdn.shopify.com/s/files/1/0464/0463/2731/files/50554644918.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/11383010616.pdf
    • https://cdn.shopify.com/s/files/1/0431/1787/1265/files/23608081714.pdf
    • https://cdn.shopify.com/s/files/1/0434/0436/1884/files/chrome_extensions_android_mobile.pdf
    • https://cdn.shopify.com/s/files/1/0427/9389/4044/files/89219745663.pdf
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/wordly_wise_3000_book_6_lesson_11_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/82290506631.pdf
    • https://cdn.shopify.com/s/files/1/0437/9967/5041/files/blue_is_the_warmest_color_book_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/7699/3695/files/52847450876.pdf
    • https://cdn.shopify.com/s/files/1/0431/8189/9944/files/42421886970.pdf
    • https://cdn.shopify.com/s/files/1/0437/9977/3341/files/transformer_un_garage_en_atelier_d_artiste.pdf
    • https://cdn.shopify.com/s/files/1/0437/5530/7159/files/lincolnshire_police_traffic_reports.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/83180702961.pdf
    • https://cdn.shopify.com/s/files/1/0429/0304/4263/files/74974534275.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_off00006a7a.bin
14db236ad0c85e266a10bb645b6d49a83a795679f41c8aea6637602e883bed2d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A7A 5024 bytes
font_01_sfnt_off00007b88.bin
496285da747d86d45cbce122745cae212a1476aa54153f2ff0c26484b8fdb2b5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B88 10240 bytes