Malicious PDF — malware analysis report

Static analysis result for SHA-256 334b998d4bd0cb22…

MALICIOUS

PDF

41.6 KB Created: 2020-08-21 22:26:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0c70e62fb668dfc9135cf2d28b2cd9d4 SHA-1: 1f8d1347abc9445029fcf5fef2ede7434c5a6f6c SHA-256: 334b998d4bd0cb22f0857709a7b3874d9a138fad183d66d24fb3dded85a7b6c8
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

This PDF file contains a large number of external links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a PDF link to known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=ffiec.+gov+call+report+instructions'. This indicates a phishing or social engineering attempt to lure the user to a malicious site. No scripts were extracted, but the presence of numerous links and the specific malicious redirector strongly suggest a phishing campaign.

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.cc/pify?keyword=ffiec.+gov+call+report+instructions
    • http://xowigivo.danberkey.net/uploads/1/3/1/3/131384635/14890e9ed75dbbb.pdf
    • http://togipe.devitthouse.com/uploads/1/3/1/1/131163658/relir_japexifelasusa_julowoxuzegu_sikuweva.pdf
    • http://rameko.scottysunlimited.com/uploads/1/3/1/4/131407222/vogomeridoz-tulofun-wuluxokidodod.pdf
    • http://ragobib.venturabeachcottage.net/uploads/1/3/1/4/131406947/kiwij.pdf
    • http://files.victoriawaterfronttours.com/uploads/1/3/2/6/132682039/fabovemo-vozaligim-mabubumusugu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3694/2234/files/vofokomobusesuwolomow.pdf
    • https://cdn.shopify.com/s/files/1/0430/3981/7890/files/48695046611.pdf
    • https://cdn.shopify.com/s/files/1/0434/8231/6957/files/ravajeladokifagunowuvovug.pdf
    • https://cdn.shopify.com/s/files/1/0435/6482/6783/files/convert_to_base64_encoded_string_online.pdf
    • https://cdn.shopify.com/s/files/1/0428/9714/6019/files/pdf_book_reader_app_apk.pdf
    • https://cdn.shopify.com/s/files/1/0433/7342/8888/files/fotasutag.pdf
    • https://cdn.shopify.com/s/files/1/0435/2966/6724/files/ssa_academic_calendar_2020.pdf
    • https://cdn.shopify.com/s/files/1/0434/9932/3558/files/kivuzewadujetekoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/5652/8541/files/bharat_gas_new_connection_delhi_form_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/9105/8076/files/wasewufapudalopan.pdf
    • https://cdn.shopify.com/s/files/1/0431/6341/8784/files/ncert_maths_textbook_for_class_4.pdf
    • https://cdn.shopify.com/s/files/1/0461/0690/2691/files/ilpa_reporting_template_2017.pdf
    • https://cdn.shopify.com/s/files/1/0432/7342/0963/files/66366105539.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_off000065ce.bin
bc50abfd2717b88345f50b69c0b937f7cd05c5c32f7719f198e84b2b298b7c82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65CE 5232 bytes
font_01_sfnt_off000077c4.bin
a29cb49508db32f2ef7a55a6eb319489adcfe4544057b1a91a52057515aabd18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77C4 9904 bytes

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