Malicious PDF — malware analysis report

Static analysis result for SHA-256 84c956ef1524eb56…

MALICIOUS

PDF

54.5 KB Created: 2020-08-22 07:47:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44831223547f90a347838f5d085c8762 SHA-1: ed850f7aadcef077f1128d442d409b194cf7f31b SHA-256: 84c956ef1524eb5630d3330e1b7498df41bafaf28ea8f2dad85e3066140135a8
128 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic identifying a malicious redirector. The document body, though heavily obfuscated, contains text and URLs that suggest a lure for downloading content. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or malware.

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.cc/pify?keyword=maths+practice+book+for+class+4+pdf
    • http://files.travisroach.com/uploads/1/3/2/6/132681771/198221.pdf
    • http://fulibur.massachusetts-bankruptcy.com/uploads/1/3/1/0/131071157/d9a024403ac.pdf
    • http://botuz.mvpcorse.com/uploads/1/3/0/7/130775048/1ac2c0f6e0f1.pdf
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/pirurede.pdf
    • https://cdn.shopify.com/s/files/1/0430/3853/9927/files/kibisopoxite.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/52657742202.pdf
    • https://cdn.shopify.com/s/files/1/0431/6823/5675/files/jilovogexirero.pdf
    • https://cdn.shopify.com/s/files/1/0454/5613/0200/files/set_me_ablaze_chords.pdf
    • https://cdn.shopify.com/s/files/1/0434/7058/6006/files/82776965148.pdf
    • https://cdn.shopify.com/s/files/1/0459/2520/4117/files/kelas_cephalopoda.pdf
    • https://cdn.shopify.com/s/files/1/0433/7975/3121/files/fabitasaw.pdf
    • https://cdn.shopify.com/s/files/1/0428/4894/4295/files/bikol_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0431/4539/6384/files/45418210149.pdf
    • https://cdn.shopify.com/s/files/1/0430/8136/7712/files/the_flash_s03e20_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0431/5647/1959/files/64119501754.pdf
    • https://cdn.shopify.com/s/files/1/0431/5647/1959/files/51724335048.pdf
    • https://cdn.shopify.com/s/files/1/0433/6635/0998/files/87817157830.pdf
    • https://cdn.shopify.com/s/files/1/0436/2112/2211/files/11408782695.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006574.bin
1affe1a6d84174b56c9751ee09a7c18d271c8fc7f1616338082c2a135d23b7f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6574 5540 bytes
font_01_sfnt_off0000783e.bin
354a48404ff7dce23f8ab17d8f5302ea6b66dca81de5889aeda93400fa76000a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x783E 7536 bytes
font_02_sfnt_off00008da0.bin
d9fc9cd05119e44224993b2826409df1e15c98d6a38ce7697f1480045f21f1ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DA0 10776 bytes
font_03_sfnt_off0000b275.bin
b2b92fcd2919487c650493c91add21b847ed7c13e64e38272e25808cac974a95		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB275 17492 bytes

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