Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fef4df95b56113b…

MALICIOUS

PDF

57.1 KB Created: 2020-08-11 17:03:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7590292b5379f3eaf641ea743086f237 SHA-1: 30de3867a9696deac0963dcb62fb4362a1a2e25f SHA-256: 7fef4df95b56113ba7bbe875328b12b9e2942cc19a3931d30128bf62791c2ec0
128 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, disguised as a download for academic papers. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the malicious nature of the redirector. The PDF_SEO_LINK_FARM heuristic indicates a large number of links pointing to other PDFs, likely for SEO manipulation or to host further malicious content. The document body contains the lure text and the malicious URL.

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=cbse+class+12+accountancy+question+paper+2020+pdf+download
    • http://files.bridgeport.votersguide.info/uploads/1/3/0/7/130776037/wewewoluj.pdf
    • http://gumat.hunterhomeinspection.com/uploads/1/3/1/8/131871390/8790626.pdf
    • http://files.azlco.com/uploads/1/3/1/8/131857315/zalokimumepude.pdf
    • http://files.alinjarralabradors.com.au/uploads/1/3/0/9/130969801/jizuligigezixog-famitazotix-zidujosasexe-dawupidefe.pdf
    • https://cdn.shopify.com/s/files/1/0437/9849/5389/files/lixebejakuz.pdf
    • https://cdn.shopify.com/s/files/1/0433/4691/9579/files/vakojukemekimovonaluw.pdf
    • https://cdn.shopify.com/s/files/1/0428/5153/2963/files/bubigesig.pdf
    • https://cdn.shopify.com/s/files/1/0436/2534/9273/files/rakaberopipap.pdf
    • https://cdn.shopify.com/s/files/1/0433/8096/5534/files/44195811437.pdf
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/42337494398.pdf
    • https://cdn.shopify.com/s/files/1/0433/5842/1142/files/oxford_american_writer_s_thesaurus.pdf
    • https://cdn.shopify.com/s/files/1/0437/4976/9367/files/27830194963.pdf
    • https://cdn.shopify.com/s/files/1/0437/7634/4225/files/fiwowad.pdf
    • https://cdn.shopify.com/s/files/1/0432/9422/8630/files/najaxur.pdf
    • https://cdn.shopify.com/s/files/1/0428/3426/4220/files/electrical_lockout_procedure.pdf
    • https://cdn.shopify.com/s/files/1/0435/8845/2515/files/gefazazitager.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007084.bin
c36ebd3adbe86b74f81587d4e063c417df499ac778ce48a68a8eefbfd0516082		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7084 5840 bytes
font_01_sfnt_off0000847d.bin
1b7399783cab615e72726ee69b5abd8c87986855270aba2b66736f2ef3c29daf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x847D 7144 bytes
font_02_sfnt_off0000989b.bin
2a975cf2360e40ba2190b079b9cca824cdc6ac40fc4c87b89eddc8e8e78b6585		 pdf-font-stream PDF embedded font (sfnt) at offset 0x989B 10360 bytes
font_03_sfnt_off0000bc43.bin
c1e6ffc75750c5739b28184ea098192487e1c360ff13057a509a4a6bbbe05e79		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBC43 17492 bytes

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