Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d0977e6f199e359…

MALICIOUS

PDF

62.1 KB Created: 2020-08-03 18:01:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d4bc0b8082fddb45b29c9389c7a4edd SHA-1: 7ddb027b6b2d2de8f7a291b098a735972a5cc3e2 SHA-256: 8d0977e6f199e359ad60f816052b6c7db4588fc11072790a7bd6e2287d0c5092
160 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to a redirector service, suggesting a link farm or phishing lure. The document body, though heavily obfuscated, contains a URL that appears to be the primary lure. The presence of a password archive lure heuristic indicates the document may be part of a multi-stage attack, potentially to bypass gateway security. No scripts were extracted from this sample.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=applied+physics+1+first+year+engineering+pdf
    • http://files.cuyamacawoodsfsc.org/uploads/1/3/0/7/130738769/5800500.pdf
    • http://pulotes.bestdealfitness.com/uploads/1/3/0/7/130775448/e79dae13.pdf
    • http://files.handhills.ab.ca/uploads/1/3/1/4/131409333/vunurumekuxef-wiwogalukud-tizumas-nubudiluvelu.pdf
    • http://files.heavencanbefound.com/uploads/1/3/1/3/131384018/tizalunovemili.pdf
    • http://files.kyoeiuni.com/uploads/1/3/1/3/131380596/fopuvujenoka_gawimabe.pdf
    • https://cdn.shopify.com/s/files/1/0433/5845/3928/files/791099812.pdf
    • https://cdn.shopify.com/s/files/1/0428/9685/1103/files/flip_video_camera_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/9952/1181/files/97503456843.pdf
    • https://cdn.shopify.com/s/files/1/0434/4571/5109/files/tetapabomobodesefewuwubiw.pdf
    • https://cdn.shopify.com/s/files/1/0432/3501/6863/files/moliguxafaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/7546/0515/files/45756763108.pdf
    • https://cdn.shopify.com/s/files/1/0440/1951/5557/files/towosenixizorawije.pdf
    • https://cdn.shopify.com/s/files/1/0431/6528/6549/files/axios_error_handling.pdf
    • https://cdn.shopify.com/s/files/1/0431/3215/8116/files/3165498538.pdf
    • https://cdn.shopify.com/s/files/1/0429/4901/7756/files/tedamer.pdf
    • https://cdn.shopify.com/s/files/1/0428/8957/6607/files/87917493469.pdf
    • https://cdn.shopify.com/s/files/1/0433/8761/7447/files/lijigoxadarezopokinivubit.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008363.bin
db53f3e9f88a2a9ae60829d9735077a07d04f56ffb2cf808597f91688879683c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8363 5560 bytes
font_01_sfnt_off00009657.bin
f6b62e9035402a1a9392ea08b9cadd8304efed4fa1a380714ac12913802a6c70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9657 3944 bytes
font_02_sfnt_off0000a5a7.bin
5e067315a2bd9524b6254977960f062bb129990ed69868068e29b4596197f3c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA5A7 2320 bytes
font_03_sfnt_off0000affa.bin
10f8b7597e0dea5fc46f789566747e651bc6c07419cce18deab6eafdc67efc9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAFFA 10288 bytes
font_04_sfnt_off0000d33a.bin
5c098fb3391207bb209bc0c2cbd557fc647186f3645483be69e2fd84bb784d22		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD33A 16356 bytes

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