Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c60b6f7cb67cd78…

MALICIOUS

PDF

51.8 KB Created: 2020-08-04 07:33:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bdbbc13f51dcfca92563def93f33ee36 SHA-1: 38a1f823bfae71e2c82fa5773efcebf185cb74af SHA-256: 9c60b6f7cb67cd78d678e40c45bbf63b658385936ff40e081657cb7bce5d24f5
150 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO poisoning. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used to obscure the final destination. The document body, though heavily obfuscated, contains the text 'Developmental psychology definition pdf' and the malicious redirector URL, indicating a lure to trick users into clicking the link. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=developmental+psychology+definition+pdf
    • http://files.ornamentsofexpression.com/uploads/1/3/1/4/131455883/vojosa.pdf
    • http://files.primocelloceramics.com/uploads/1/3/1/4/131408415/e122f68.pdf
    • http://files.dvrealworldlearning.com/uploads/1/3/1/3/131379946/7ce2c5.pdf
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/nijufuriwezifufij.pdf
    • https://cdn.shopify.com/s/files/1/0428/0709/9558/files/fekavefojezifatenadajav.pdf
    • https://cdn.shopify.com/s/files/1/0440/9432/4888/files/10979914548.pdf
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/vojumedafalak.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/85155057715.pdf
    • https://cdn.shopify.com/s/files/1/0440/7679/4008/files/sports_medicine_vocabulary_list.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wajumibuxup.pdf
    • https://cdn.shopify.com/s/files/1/0433/1382/3909/files/27576302078.pdf
    • https://cdn.shopify.com/s/files/1/0428/4655/2227/files/64175443849.pdf
    • https://cdn.shopify.com/s/files/1/0429/7680/5018/files/dalutaj.pdf
    • https://cdn.shopify.com/s/files/1/0431/4267/6636/files/zilajusavowekijufadafaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/4796/8149/files/phpstorm_2018._1_license_server.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_off00008ca1.bin
7252d480282c446f9cfaaae79ec36781e2b2ba8d8be6ae73b0115a41dbab1cab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CA1 5636 bytes
font_01_sfnt_off00009fc5.bin
8b3630e0c013862f39f001db9417f587900dc0d70772aff0a9b5c350e90d66cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FC5 10040 bytes

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