Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d3faf7ec1a08a5e…

MALICIOUS

PDF

55.4 KB Created: 2020-08-08 01:58:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a19f1f2e848911c7bd06bf5291f18559 SHA-1: 42a7467ac59a408862cbde152d92f11fc5868846 SHA-256: 2d3faf7ec1a08a5e5776951755bf467a669431b8f06c112513fa609b4f705172
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with the primary one redirecting to a known malicious URL. The document body, though heavily obfuscated, contains text suggesting a lure for a 'free download', aligning with the malicious redirector's purpose. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=bsc+magazine+pdf+free+download+2020
    • http://files.paragonlifecoaching.com/uploads/1/3/1/3/131379194/8535240.pdf
    • http://turog.upandovered.com/uploads/1/3/1/0/131069934/1164660.pdf
    • http://files.labelletraining.com/uploads/1/3/1/1/131164124/rugoxenanozofiw-ponapiseson.pdf
    • http://penusomoj.evelineverhulst.nl/uploads/1/3/1/4/131453540/9544758.pdf
    • http://files.tradertscraftworks.com/uploads/1/3/0/7/130775465/a8e895.pdf
    • https://cdn.shopify.com/s/files/1/0432/1627/3563/files/16563895487.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rixiridujafogidubiba.pdf
    • https://cdn.shopify.com/s/files/1/0431/7990/1085/files/nomudemokoposopud.pdf
    • https://cdn.shopify.com/s/files/1/0429/5032/8486/files/psd_to_mac.pdf
    • https://cdn.shopify.com/s/files/1/0433/0346/9221/files/dekupuxovibupobun.pdf
    • https://cdn.shopify.com/s/files/1/0432/9065/6924/files/37265883327.pdf
    • https://cdn.shopify.com/s/files/1/0429/9853/0202/files/package_air_conditioning_system_working.pdf
    • https://cdn.shopify.com/s/files/1/0433/3273/1038/files/52131145386.pdf
    • https://cdn.shopify.com/s/files/1/0434/4014/4534/files/50011829715.pdf
    • https://cdn.shopify.com/s/files/1/0427/8750/4294/files/sogobuporuzidonipekidevip.pdf
    • https://cdn.shopify.com/s/files/1/0432/2902/0317/files/nolaxewavufepijogaluve.pdf
    • https://cdn.shopify.com/s/files/1/0432/3485/3021/files/wiwap.pdf
    • https://cdn.shopify.com/s/files/1/0437/1467/4841/files/bisaya_story_with_picture.pdf
    • https://cdn.shopify.com/s/files/1/0432/1745/3211/files/vehicle_dynamics_control.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_off000094c3.bin
3c6aca0d457d0ec0a85e2c8db85d08de88e386a7585bdc2f1053c8de7cd1db3c
pdf-font-stream PDF embedded font (sfnt) at offset 0x94C3 5940 bytes
font_01_sfnt_off0000a904.bin
fd26109bbc6f3de315b9c1555aa3c5e8a883b8f9f8f70849b804302d8e95d95f
pdf-font-stream PDF embedded font (sfnt) at offset 0xA904 11616 bytes