Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bb302f22f4b76fc…

MALICIOUS

PDF

45.1 KB Created: 2020-08-12 07:47:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f7d415dc8fd2fb1348b2916f3e699d1 SHA-1: 480c6b314551228ba4ede15cdf9aa11d6a617121 SHA-256: 2bb302f22f4b76fcdefb380f05c303c5425c1b4e81a0cc643cc5a3d49b806640
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, likely for SEO manipulation. One prominent link, however, redirects to a known malicious infrastructure at ttraff.ru. The document body, though heavily obfuscated, also contains this malicious URL, suggesting the primary intent is to redirect the user to a malicious site. No scripts were extracted from this sample.

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.ru/pify?keyword=commutative+property+of+multiplication+worksheets+3rd+grade+pdf
    • http://wuzis.michael-corey.com/uploads/1/3/1/4/131407089/b56a06908e2e0.pdf
    • http://files.brokenwcowboygear.com/uploads/1/3/1/3/131384401/4922141.pdf
    • http://files.surreyhillsmusicfestival.com/uploads/1/3/1/4/131437839/betolizam_diken_sowidixaxi_vasufepubedutux.pdf
    • https://cdn.shopify.com/s/files/1/0431/7364/2406/files/essentials_of_statistics_triola.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xoxolesusoziviro.pdf
    • https://cdn.shopify.com/s/files/1/0434/9024/6822/files/beowulf_burton_raffel.pdf
    • https://cdn.shopify.com/s/files/1/0428/3976/9254/files/14299172083.pdf
    • https://cdn.shopify.com/s/files/1/0431/4945/9605/files/precalculus_math_book.pdf
    • https://cdn.shopify.com/s/files/1/0428/4160/4263/files/34448639927.pdf
    • https://cdn.shopify.com/s/files/1/0432/4871/3896/files/30918340146.pdf
    • https://cdn.shopify.com/s/files/1/0429/3797/4950/files/57314271212.pdf
    • https://cdn.shopify.com/s/files/1/0434/4581/3414/files/vugawusili.pdf
    • https://cdn.shopify.com/s/files/1/0431/8032/7070/files/puxowabubomi.pdf
    • https://cdn.shopify.com/s/files/1/0435/2845/4298/files/48304515052.pdf
    • https://cdn.shopify.com/s/files/1/0437/5347/2151/files/anatomia_de_los_alveolos_pulmonares.pdf
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/nodojuvavuv.pdf
    • https://cdn.shopify.com/s/files/1/0432/4101/3415/files/nudunamarasobozulufux.pdf
    • https://cdn.shopify.com/s/files/1/0432/4655/1208/files/pususodakukexokunob.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_off00005b4c.bin
ff3f953b212b7a960c6a17d3ddaa139e7bcc1a423e751ae50c83e5f7b1fb663e
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B4C 5956 bytes
font_01_sfnt_off00006f85.bin
afdba38e6385797a715d1c2586d74a4e8188555f93305e5fe028345597f060ff
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F85 9900 bytes
font_02_sfnt_off00009191.bin
edc33fe94617b35fa5734827a91efdc9665031ac3a5a8b8018a6396f4204b3d2
pdf-font-stream PDF embedded font (sfnt) at offset 0x9191 16116 bytes