Malicious PDF — malware analysis report

Static analysis result for SHA-256 d51326b3cdba7d33…

MALICIOUS

PDF

40.3 KB Created: 2020-08-22 15:13:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87cc8d3cb4b5638cd1c082c5def65171 SHA-1: ca490a1201b7f7dadd6900af805d3722e882c148 SHA-256: d51326b3cdba7d336cd1a9dc2260bb4f0767eb5c9b31fb77b601c3533f80b1d8
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though partially corrupted, suggests a lure related to educational worksheets, aiming to trick users into clicking the malicious link. The primary malicious URL identified is ttraff.ru, which likely serves as a gateway to further malicious content or phishing pages.

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=solving+factorable+quadratic+equations+worksheet+1+answers
    • http://files.itsbendybo.com/uploads/1/3/1/4/131453636/jezusigeva_lipukada_kodedafa.pdf
    • https://cdn.shopify.com/s/files/1/0431/8402/9854/files/56833841623.pdf
    • https://cdn.shopify.com/s/files/1/0440/7079/7462/files/todifuriroz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dekafarisajanitid.pdf
    • https://cdn.shopify.com/s/files/1/0431/9887/3762/files/97170955544.pdf
    • https://cdn.shopify.com/s/files/1/0434/9883/2037/files/pofomebusobujupej.pdf
    • https://cdn.shopify.com/s/files/1/0430/2651/4077/files/88627442638.pdf
    • https://cdn.shopify.com/s/files/1/0434/9306/4870/files/jcaho_blood_transfusion_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0430/7209/4362/files/59040923798.pdf
    • https://cdn.shopify.com/s/files/1/0428/6971/9196/files/jazuxamuwejowadivabire.pdf
    • https://cdn.shopify.com/s/files/1/0440/6591/5045/files/13084619351.pdf
    • https://cdn.shopify.com/s/files/1/0433/7441/1926/files/72947157269.pdf
    • https://cdn.shopify.com/s/files/1/0432/5978/9472/files/34123635203.pdf
    • https://cdn.shopify.com/s/files/1/0439/1059/4728/files/dota_2_discord.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_off00005d15.bin
0276881303908f0cb576d3af6d2dbf4a9c67246301b6d13b2081d65fb0437d1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D15 5920 bytes
font_01_sfnt_off00007141.bin
851c4a8fbf00d211706d95c0d260ba208b954a71203eeda26533d6ec35d34e38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7141 10208 bytes

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