Malicious PDF — malware analysis report

Static analysis result for SHA-256 d285be465d8da8b4…

MALICIOUS

PDF

56.5 KB Created: 2020-08-24 09:47:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0b7c1264f3980ea8f2f86a3b8726e5d8 SHA-1: 5be452dce9b498b2cb3d1e3f9a8c1f8773ea41f5 SHA-256: d285be465d8da8b48c64d775875ec754f2b22bc874d862a8feb44eac57968a85
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. It also exhibits a PDF link farm heuristic, with numerous links hosted on 'cdn.shopify.com'. The document body, though heavily obfuscated, contains references to the 'ttraff.com' URL and other Shopify-hosted PDFs, suggesting a lure to a malicious site disguised as a benign document. No scripts were extracted, limiting the analysis of direct execution capabilities.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.com/pify?keyword=definition+of+aerobic+exercise+pdf
    • http://files.astonialandscaping.ca/uploads/1/3/0/7/130738548/ba1992.pdf
    • http://files.bgprodaniuk.com/uploads/1/3/0/7/130775350/besil.pdf
    • http://bituba.contevittorio.com/uploads/1/3/1/8/131856257/mokadotajonavig.pdf
    • http://files.markbroyard.com/uploads/1/3/0/7/130775211/pufizizadogom_pudozizefepas_ramilajigoxa_nagun.pdf
    • https://cdn.shopify.com/s/files/1/0430/4338/9597/files/pojiz.pdf
    • https://cdn.shopify.com/s/files/1/0464/2753/7560/files/top_productivity_apps_for_android_phones.pdf
    • https://cdn.shopify.com/s/files/1/0439/0351/6827/files/matotoneriwerizixi.pdf
    • https://cdn.shopify.com/s/files/1/0461/4337/3480/files/80776726625.pdf
    • https://cdn.shopify.com/s/files/1/0450/2175/7590/files/dry_matter_determination.pdf
    • https://cdn.shopify.com/s/files/1/0429/3961/3347/files/letufi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5218/7298/files/pdf_biocalculus_calculus_probability_and_statistics_for_the_life_sciences.pdf
    • https://cdn.shopify.com/s/files/1/0432/5359/6322/files/55849472384.pdf
    • https://cdn.shopify.com/s/files/1/0434/2297/4117/files/sikibureg.pdf
    • https://cdn.shopify.com/s/files/1/0434/2431/7596/files/foxojepogozaxopazixobu.pdf
    • https://cdn.shopify.com/s/files/1/0430/1045/7753/files/14165886451.pdf
    • https://cdn.shopify.com/s/files/1/0430/7743/5556/files/pulapefiroli.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000b81f.bin
25094a666236c3540754369e074789443cd0b4c57c78a895137f7dd667a2abfd
decompressed-pdf-stream PDF FlateDecoded stream at offset 0xB81F 18268 bytes
font_00_sfnt_off0000781e.bin
c093d9c8425796e841b0b8b817ee2496ad0a53b216301ddc29e193e3ddc922c3
pdf-font-stream PDF embedded font (sfnt) at offset 0x781E 5324 bytes
font_01_sfnt_off00008a45.bin
824db4d52504cf47a93862e99f354e5a074805a7534c159fcab49285d3e8d638
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A45 14856 bytes