Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcf9e6993676dbcf…

MALICIOUS

PDF

46.2 KB Created: 2020-10-20 08:05:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42956cc29229bba154ee2b7a7ffce79e SHA-1: a0a401d1d7838708b471a7621bd34440a31a7259 SHA-256: fcf9e6993676dbcf5a9b1ac89ca870ee6b91668d48c013d5c23336f91bf35069
120 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with a primary malicious redirector URL disguised as a 'Tencent game list android' search result. This indicates a phishing or malware distribution attempt. The embedded URL, https://ttraff.club/123?keyword=tencent+game+list+android, is flagged as malicious, suggesting it leads to a harmful destination. The document body, though heavily obfuscated, contains references to the malicious URL and other benign-looking PDF links, likely to mask the malicious intent.

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.club/123?keyword=tencent+game+list+android
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/towuf.pdf
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/1867598.pdf
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/4045700.pdf
    • https://dofazodasi.weebly.com/uploads/1/3/0/8/130873943/zavani.pdf
    • https://kiseridebajesa.weebly.com/uploads/1/3/1/4/131408791/c67d87ea393.pdf
    • https://cdn-cms.f-static.net/uploads/4379973/normal_5f8ab1446caaa.pdf
    • https://cdn-cms.f-static.net/uploads/4366018/normal_5f8afbfdaaa84.pdf
    • https://cdn-cms.f-static.net/uploads/4378834/normal_5f8af09486ec6.pdf
    • https://cdn-cms.f-static.net/uploads/4378836/normal_5f8d4df84fa7e.pdf
    • https://cdn-cms.f-static.net/uploads/4374703/normal_5f8a347fea7f3.pdf
    • https://cdn-cms.f-static.net/uploads/4367961/normal_5f8c20fe33b43.pdf
    • https://cdn-cms.f-static.net/uploads/4379355/normal_5f8da56109eb5.pdf
    • https://jobubati.weebly.com/uploads/1/3/1/4/131453688/moripeweralup-kepiduxibedij-kuguseva.pdf
    • https://zegojipoxe.weebly.com/uploads/1/3/1/0/131069766/vubofinemomuru.pdf
    • https://rojusonevupa.weebly.com/uploads/1/3/0/8/130814232/penexetiji.pdf
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/3669356.pdf
    • https://nagifinapu.weebly.com/uploads/1/3/2/6/132696111/sodujifezulojut.pdf
    • https://jobubati.weebly.com/upload
    • https://cdn.shopify.com/s/files/1/0479/1412/3428/files/5131984714.pdf
    • https://cdn.shopify.com/s/files/1/0482/5274/7937/files/88247800601.pdf
    • https://cdn.shopify.com/s/files/1/0505/4919/4917/files/nudekalefigebebali.pdf
    • https://cdn.shopify.com/s/files/1/0438/3742/3776/files/pozapinine.pdf
    • https://cdn.shopify.com/s/files/1/0439/0099/3691/files/the_worlds_easyest_game_free_online.pdf
    • https://cdn.shopify.com/s/files/1/0483/9810/6776/files/8850645442.pdf
    • https://cdn.shopify.com/s/files/1/0266/8045/9456/files/gedani.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_off0000772f.bin
980e22f5ba74ead224fc7ed1cc6fe960d86c8be2495685ca4af5c859e0d60bdd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x772F 5208 bytes
font_01_sfnt_off000088c5.bin
3e5e290ef630d6601f45f5596508edaabeda3ff54ed5a9db03c0eb0bc1c475fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88C5 9956 bytes

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