Malicious PDF — malware analysis report

Static analysis result for SHA-256 efcbe20a13d16159…

MALICIOUS

PDF

43.5 KB Created: 2020-08-01 23:50:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c95d8f22a038a9661372db89e935539 SHA-1: ee7086b3b9a914c4d7edc4df4fbbfe95eedc42c8 SHA-256: efcbe20a13d16159281592bdeb67021fc46e909d29bf48a13a9f450bf032a47a
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains and one critical link to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/pify?keyword=asus+tablet+manual+pdf, suggesting a lure to disguise malicious activity as a document download. The presence of numerous PDF links indicates a strategy to distribute malicious content or phish users through a large number of seemingly benign documents.

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=asus+tablet+manual+pdf
    • http://files.mrsfleck.com/uploads/1/3/1/8/131871586/wosusoxix.pdf
    • http://files.countrysideanimalclinictooele.com/uploads/1/3/1/3/131380868/newufutuje.pdf
    • http://files.sharpiepresents.com/uploads/1/3/1/3/131381006/zipojefalipimi.pdf
    • http://files.mabsinc.com/uploads/1/3/1/1/131164520/17b592fcc0dc1f.pdf
    • https://cdn.shopify.com/s/files/1/0437/3164/8661/files/filiridojufenelelazola.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66916333827.pdf
    • https://cdn.shopify.com/s/files/1/0433/8037/5708/files/zexaxabaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/2997/8526/files/sulotumejodofelitidazab.pdf
    • https://cdn.shopify.com/s/files/1/0433/5806/0703/files/52945532061.pdf
    • https://cdn.shopify.com/s/files/1/0430/0649/2831/files/persona_5_girlfriend.pdf
    • https://cdn.shopify.com/s/files/1/0432/0192/1184/files/32367464103.pdf
    • https://cdn.shopify.com/s/files/1/0431/5080/3099/files/17398276081.pdf
    • https://cdn.shopify.com/s/files/1/0437/8748/5342/files/lizupulamuvo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8872/3616/files/88173362718.pdf
    • https://cdn.shopify.com/s/files/1/0437/7165/8392/files/fatasixozenu.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_off00006b78.bin
0c2405cd1ea1b2bc8434ca24b975ca7b4b71489d2c3a1fbd5b5789246801e96b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B78 5220 bytes
font_01_sfnt_off00007d2c.bin
3749bbb6f2ca2efef37a8d7d05d5c817d99b532904691b8110cb1cc6e40bd3e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D2C 10560 bytes

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