Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa929f70ebbc3fed…

MALICIOUS

PDF

44.3 KB Created: 2020-08-20 00:03:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0c8fd577ce455d46bb162ba04a6eaba SHA-1: b458e9ea3dc7946d46c6cbb58aff009b85fabf1a SHA-256: aa929f70ebbc3fedcddf348475180b09c7d5d88ead4ab23a122e04d2ea986fe2
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download button, which is a common lure for phishing or malware delivery. The document body, though heavily obfuscated, contains the primary malicious URL. The presence of a link farm further suggests an attempt to manipulate search engine results or distribute malicious content.

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.com/pify?keyword=catalyst+application+form
    • http://files.russeldmcleanbooks.com/uploads/1/3/1/3/131397981/4a0e6e1b0.pdf
    • http://kalibav.annamariewytko.com/uploads/1/3/2/6/132681812/farat_wuxedepilipowi_rawujota_fipos.pdf
    • http://files.mariposa-design-events.com/uploads/1/3/0/9/130969220/5688094.pdf
    • http://files.beamwellness.org/uploads/1/3/2/6/132695492/miwasoda-makomo-dorupa-gazuvusitaloxup.pdf
    • https://cdn.shopify.com/s/files/1/0434/7795/8822/files/features_of_a_non_chronological_report_activity.pdf
    • https://cdn.shopify.com/s/files/1/0432/2885/6477/files/kalarigamakelewabed.pdf
    • https://cdn.shopify.com/s/files/1/0428/2646/5436/files/gagege.pdf
    • https://cdn.shopify.com/s/files/1/0430/1098/2041/files/rizaxuzarelubevud.pdf
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/breath_of_fire_3_strategy_guide.pdf
    • https://cdn.shopify.com/s/files/1/0437/7142/9016/files/movovi.pdf
    • https://cdn.shopify.com/s/files/1/0429/8348/9690/files/online_cv_making_format.pdf
    • https://cdn.shopify.com/s/files/1/0428/0185/6679/files/97873448762.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tovovowegafakaroseras.pdf
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/high_carbon_steel_properties.pdf
    • https://cdn.shopify.com/s/files/1/0432/1614/2497/files/35883670640.pdf
    • https://cdn.shopify.com/s/files/1/0431/1128/4893/files/82882286082.pdf
    • https://cdn.shopify.com/s/files/1/0430/8772/4704/files/naxopi.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_off00006ef3.bin
aad6e74cf4aae12935c294595e90256209b10411dae6260505a0a21b8fb6e413
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF3 5168 bytes
font_01_sfnt_off00008074.bin
c1fbb986efb46a49d7e0e04052a4ad35ed88e04f39e10035d740c44cb0398853
pdf-font-stream PDF embedded font (sfnt) at offset 0x8074 10352 bytes