Malicious PDF — malware analysis report

Static analysis result for SHA-256 95d44f95cb6c650e…

MALICIOUS

PDF

40.5 KB Created: 2020-08-04 07:02:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 13daf0cd79df5faceee1353fd5945b55 SHA-1: 1807888bdc8e106212b68d843c53bbcfd685ec98 SHA-256: 95d44f95cb6c650e8ea74832e77be0cb37f35071668d6f5abbaab87edbe8c8ea
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a link farm, indicating a phishing or malware distribution attempt. The document body and heuristics suggest a lure for cracked software downloads. The presence of a visual download button further supports this social engineering tactic. The primary malicious IOC is the redirector URL which is used to obscure the final destination.

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.cc/pify?keyword=free+download+pdf+to+excel+converter+software+with+crack
    • http://files.chlaudit.com/uploads/1/3/1/4/131437474/lugodelax-rawolobusore-rusinonolemumev-vonaforu.pdf
    • http://files.mylegalvillage.com/uploads/1/3/1/4/131408581/dfe7d2c977d8.pdf
    • http://files.isfjall.com/uploads/1/3/0/7/130776118/5046925.pdf
    • https://cdn.shopify.com/s/files/1/0429/8375/1831/files/pusub.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lurexemip.pdf
    • https://cdn.shopify.com/s/files/1/0431/8072/0294/files/letedejexaref.pdf
    • https://cdn.shopify.com/s/files/1/0433/8014/6339/files/dakokesomojepunor.pdf
    • https://cdn.shopify.com/s/files/1/0427/4244/8295/files/12789290384.pdf
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/sinofeju.pdf
    • https://cdn.shopify.com/s/files/1/0439/7416/4638/files/lekuzitozizojisulebudilok.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bewewolifokolugetu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3077/2901/files/sujomojeko.pdf
    • https://cdn.shopify.com/s/files/1/0436/2259/6768/files/teverim.pdf
    • https://cdn.shopify.com/s/files/1/0437/2470/1845/files/gejasamezimejufuta.pdf
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/dukewiju.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_off00006025.bin
3fd61839c7fdb584e0bae5b34bbdd30b860cca277613844718fe032107ecb2dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6025 5480 bytes
font_01_sfnt_off000072e5.bin
a0c9b6039cf8833588c8b9f52d0d7dab45c3bbda8a2f26ea2858eb1926725ebb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72E5 9916 bytes

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