Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fc9298510d774da…

MALICIOUS

PDF

47.0 KB Created: 2020-08-21 22:28:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4aa0ad9b17e8f58f622d5af35a9024fa SHA-1: c5c1662151577a101850a6bddb0cb2ea2f736d34 SHA-256: 9fc9298510d774daf0e60f1e41fa3876f3b2856e49e2d0041a2dd473e6e79a0e
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 links, identified as a link farm. One of the primary links, 'https://ttraff.ru/pify?keyword=aphthous+ulcers+nice+guidelines', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and numerous other links pointing to Shopify and other file-hosting domains, suggesting a coordinated effort to distribute malicious content or phish users. 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=aphthous+ulcers+nice+guidelines
    • http://files.conrah.wales/uploads/1/3/0/8/130874361/jiwaxoj-timujidu-joxupajomupa.pdf
    • http://files.cdcatparker.com/uploads/1/3/1/4/131437886/gukebizerivajijafep.pdf
    • http://files.madisonmedium.com/uploads/1/3/2/7/132710627/6161071.pdf
    • http://files.theflourishsisterhood.com/uploads/1/3/1/3/131398156/95d18288fa830.pdf
    • https://cdn.shopify.com/s/files/1/0437/6579/2929/files/88125020254.pdf
    • https://cdn.shopify.com/s/files/1/0430/9581/8404/files/i_ve_been_booed_printable.pdf
    • https://cdn.shopify.com/s/files/1/0431/9592/4637/files/bulejujuvejikewosesa.pdf
    • https://cdn.shopify.com/s/files/1/0432/5048/3368/files/11th_ncert_biology_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/0637/7633/files/fundamentals_of_managerial_economics_9th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3809/files/pka_of_amino_acids.pdf
    • https://cdn.shopify.com/s/files/1/0431/3343/6055/files/profit_and_loss_account_and_balance_sheet_format.pdf
    • https://cdn.shopify.com/s/files/1/0435/5837/1480/files/precalculus_mathematics_for_calculus.pdf
    • https://cdn.shopify.com/s/files/1/0443/6181/0076/files/48645819809.pdf
    • https://cdn.shopify.com/s/files/1/0430/9306/5881/files/bodyweight_exercise_routine.pdf
    • https://cdn.shopify.com/s/files/1/0438/2700/3549/files/antropologia_significado.pdf
    • https://cdn.shopify.com/s/files/1/0435/5099/8679/files/niveles_de_antigeno_prostatico.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/motamoditojezuwupup.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_off0000760c.bin
1c1eeac0fd95bf980f90aac6a5ed49c83124fac5cc015491f961d46f7f777bdb
pdf-font-stream PDF embedded font (sfnt) at offset 0x760C 5116 bytes
font_01_sfnt_off00008768.bin
99a3d396c2a0237ba6de13724dfbc0b3ec4803045ab4e41b480e016861101bed
pdf-font-stream PDF embedded font (sfnt) at offset 0x8768 12196 bytes