Malicious PDF — malware analysis report

Static analysis result for SHA-256 895758d43115027d…

MALICIOUS

PDF

44.9 KB Created: 2020-08-09 01:52:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 787430013b8c5af68dcbef2f34c86523 SHA-1: 3b8f8ba2e45fe2a9c964976d34c5b333bb6be852 SHA-256: 895758d43115027d9f0335bee55a1fdfc36f7f4f4f9f5145e0b004bca5bfa264
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.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The presence of a 'download button' lure further supports a malicious intent. No scripts were extracted, but the primary attack vector appears to be the redirection to malicious infrastructure.

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=a+whole+new+world+twisted+tale+pdf
    • http://files.seguinbands.com/uploads/1/3/0/8/130874326/5853776.pdf
    • http://sodan.fioga.org/uploads/1/3/2/6/132695384/sidogobapafewuj_gesupeso_muzokim_seladalinawevu.pdf
    • http://files.atxshoeplug.com/uploads/1/3/0/8/130874580/d1fc6.pdf
    • http://ganepabu.robwms.com/uploads/1/3/1/3/131380600/waviwas_norasijorumelud.pdf
    • https://cdn.shopify.com/s/files/1/0432/9832/4638/files/pufasogabomorab.pdf
    • https://cdn.shopify.com/s/files/1/0429/8165/4679/files/banegu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3497/6157/files/safada.pdf
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/homogeneous_and_heterogeneous_mixtures_activity.pdf
    • https://cdn.shopify.com/s/files/1/0436/7620/5209/files/vosawudama.pdf
    • https://cdn.shopify.com/s/files/1/0439/0918/5691/files/radical_candor_ebook.pdf
    • https://cdn.shopify.com/s/files/1/0438/3775/1456/files/provisions_of_delegation_of_financial_powers_rules_dfpr_1978.pdf
    • https://cdn.shopify.com/s/files/1/0435/7806/5059/files/2507499027.pdf
    • https://cdn.shopify.com/s/files/1/0436/5982/1209/files/30823200208.pdf
    • https://cdn.shopify.com/s/files/1/0427/8334/2748/files/jibunidilero.pdf
    • https://cdn.shopify.com/s/files/1/0433/3341/9162/files/34651547809.pdf
    • https://cdn.shopify.com/s/files/1/0437/6982/3390/files/baldor_algebra_libro.pdf
    • https://cdn.shopify.com/s/files/1/0438/2218/6656/files/zepeberopesan.pdf
    • https://cdn.shopify.com/s/files/1/0437/5724/0478/files/74066362189.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_off00007232.bin
cce65b0c3682673d3d54ef5e37948f47b4ebd61807f737f11a893f6f2b6eb349
pdf-font-stream PDF embedded font (sfnt) at offset 0x7232 5208 bytes
font_01_sfnt_off000083f2.bin
faf24df37f02c7c39cd197198f3cd9f3a8610b661b7ae6f9e3897acd6b35bc4a
pdf-font-stream PDF embedded font (sfnt) at offset 0x83F2 10096 bytes