Malicious PDF — malware analysis report

Static analysis result for SHA-256 841f114359723b27…

MALICIOUS

PDF

44.0 KB Created: 2020-08-21 22:26:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47d670aee51bb4f6b0373fed39dc5819 SHA-1: 3f7d961255da367cd6b9038348ecd818ab02140e SHA-256: 841f114359723b278b377de5a9609f779f960cd533ed032c52ccd2f107577de7
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to a known malicious URL. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=android+beaming+service+s8', which is likely intended to lead the user to a malicious site. The PDF also contains a large number of external links, flagged by PDF_SEO_LINK_FARM, suggesting a link farm or SEO poisoning tactic.

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=android+beaming+service+s8
    • http://files.wardswaterpumps.ca/uploads/1/3/1/3/131383681/tevapumidup-dabifawodupigi.pdf
    • http://tuziwib.pilatesonhudson.com/uploads/1/3/1/3/131383483/e072a45f6.pdf
    • https://cdn.shopify.com/s/files/1/0431/7485/4812/files/81099393015.pdf
    • https://cdn.shopify.com/s/files/1/0430/3113/4365/files/zoology_books_for_bsc_part_1.pdf
    • https://cdn.shopify.com/s/files/1/0436/8351/2473/files/composite_materials_applications.pdf
    • https://cdn.shopify.com/s/files/1/0433/4492/0726/files/61761843105.pdf
    • https://cdn.shopify.com/s/files/1/0437/5108/0087/files/al_quran_karim_full_apk.pdf
    • https://cdn.shopify.com/s/files/1/0438/1658/3325/files/bisomiratenubaripo.pdf
    • https://cdn.shopify.com/s/files/1/0440/3966/7877/files/jigamasibuwidelolid.pdf
    • https://cdn.shopify.com/s/files/1/0431/0145/4500/files/14551801605.pdf
    • https://cdn.shopify.com/s/files/1/0428/1656/9500/files/25121706671.pdf
    • https://cdn.shopify.com/s/files/1/0434/4256/9382/files/47839851185.pdf
    • https://cdn.shopify.com/s/files/1/0450/2038/1342/files/boiler_types.pdf
    • https://cdn.shopify.com/s/files/1/0433/9902/0696/files/40566208788.pdf
    • https://cdn.shopify.com/s/files/1/0429/9295/9642/files/92469378404.pdf
    • https://cdn.shopify.com/s/files/1/0439/1629/6360/files/goxalujufurolejegamod.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_off00006cd5.bin
38f270a80944f46f178683fb553bb227ea1dfd17f7414485b17fe2b8be9a10a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD5 5612 bytes
font_01_sfnt_off00007fca.bin
114b6a68603fec47a62b67adcbb3ccbc73856e7a8aabd6fe4ae0901de9b68df1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FCA 10420 bytes

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