Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e73cd9532410de3…

MALICIOUS

PDF

40.0 KB Created: 2020-08-07 18:44:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7797eb482603a356d34f2037625e971a SHA-1: 25b4c17d9e3d1dc632c3061b297a8821397ca7cf SHA-256: 7e73cd9532410de3ce76d17920dfaf035b80a666481230383b15e73aabdb00a1
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting PDF files, suggesting a link farm or SEO poisoning tactic. One critical heuristic firing indicates a direct link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=character+is+destiny+book+pdf'. The document body, though heavily obfuscated, contains this same URL, reinforcing the malicious intent. The primary goal appears to be redirecting the user to malicious infrastructure through a deceptive lure.

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=character+is+destiny+book+pdf
    • http://files.roadwaysport-n-trailer.com/uploads/1/3/0/7/130739525/javil.pdf
    • http://files.acuddleabovepc.com/uploads/1/3/0/7/130775242/c617286e77e.pdf
    • http://files.benk.com.au/uploads/1/3/2/8/132814967/6a27f88bae.pdf
    • https://cdn.shopify.com/s/files/1/0438/8726/3899/files/jofowubudiwevexomifosek.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45598155969.pdf
    • https://cdn.shopify.com/s/files/1/0437/2588/1498/files/biomes_quiz.pdf
    • https://cdn.shopify.com/s/files/1/0431/9464/6688/files/wuzetuwarizagofumojug.pdf
    • https://cdn.shopify.com/s/files/1/0432/4527/3251/files/jizesotufexobirudi.pdf
    • https://cdn.shopify.com/s/files/1/0433/8620/8406/files/ragowagasulexedave.pdf
    • https://cdn.shopify.com/s/files/1/0432/8249/7701/files/16479736856.pdf
    • https://cdn.shopify.com/s/files/1/0433/1126/7990/files/sisaz.pdf
    • https://cdn.shopify.com/s/files/1/0430/6924/3553/files/zuxugedubifomoxobu.pdf
    • https://cdn.shopify.com/s/files/1/0428/6591/8118/files/greasy_fork_quizlet_hack.pdf
    • https://cdn.shopify.com/s/files/1/0434/4463/3750/files/5736426367.pdf
    • https://cdn.shopify.com/s/files/1/0435/4247/9007/files/make_file_size_smaller_in_acrobat_pro.pdf
    • https://cdn.shopify.com/s/files/1/0430/1042/4993/files/18526525395.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_off00005d78.bin
c2cd8ffc91d1ab8375ac169506ddcc71057c9855e6cfec2030a1220b4f1f53e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D78 5424 bytes
font_01_sfnt_off00006fdf.bin
f5f06ab75ec1aafe6a883c8262ff6c9157a9a52ab3e61f172094992c5a0ca473		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FDF 10288 bytes

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