Malicious PDF — malware analysis report

Static analysis result for SHA-256 93009a50f2d08a70…

MALICIOUS

PDF

38.8 KB Created: 2020-08-13 23:51:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9f46fd7ea8226286c104970eaa47ecbe SHA-1: 212a182c25251397dead1fa7377e8d8a50de0a0a SHA-256: 93009a50f2d08a7036bda652676719bec21c8453e9d48acd0cb78535b67b26c6
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=video+player+app+free++apk'. Additionally, it exhibits a PDF link farm heuristic, with many links hosted on Shopify, including 'https://cdn.shopify.com/s/files/1/0431/5411/2672/files/tasif.pdf'. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic suggests a social engineering lure to trick users into clicking these links.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=video+player+app+free++apk
    • http://files.thegreenlightconsultants.com/uploads/1/3/1/3/131397973/sagobimonutane.pdf
    • http://sosiza.thesomersetangler.co.uk/uploads/1/3/1/0/131070374/xovokisegapagixuwi.pdf
    • http://files.kevin-rich.com/uploads/1/3/1/0/131070434/zozadaxazeluvined.pdf
    • https://cdn.shopify.com/s/files/1/0431/5411/2672/files/tasif.pdf
    • https://cdn.shopify.com/s/files/1/0432/6424/5925/files/popumoli.pdf
    • https://cdn.shopify.com/s/files/1/0435/7311/7087/files/67572265824.pdf
    • https://cdn.shopify.com/s/files/1/0430/9581/8397/files/runadudofimuliwosefex.pdf
    • https://cdn.shopify.com/s/files/1/0440/6591/5032/files/lofubidezaboput.pdf
    • https://cdn.shopify.com/s/files/1/0432/8102/3140/files/books_of_prime_entry_in_accounting.pdf
    • https://cdn.shopify.com/s/files/1/0430/3601/6802/files/rosivupi.pdf
    • https://cdn.shopify.com/s/files/1/0428/2574/4540/files/63439959375.pdf
    • https://cdn.shopify.com/s/files/1/0432/5618/4992/files/nuxapopitaduwenoxin.pdf
    • https://cdn.shopify.com/s/files/1/0428/0143/0695/files/fazimes.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_off00005bcb.bin
c543471cfd4efedbadf18d7e0046642146cc540967e5eb5af36d395552ab4523		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BCB 4988 bytes
font_01_sfnt_off00006cdf.bin
49f1f6c3fed275af050ee6c0b6393cc4a4ac9927bad9351917fecfd419390151		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CDF 9976 bytes

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