Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5edfdc9c60ac225…

MALICIOUS

PDF

52.8 KB Created: 2020-08-11 14:29:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f52f5a0e88dcc37f99be07b046906e47 SHA-1: 8b48776f53b40fccdd11f0605ed8adad2b4651d7 SHA-256: f5edfdc9c60ac225b6db730e7370a6671102dce58e6b71525265e77c6eecee31
128 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector, indicating a phishing or scam attempt. The primary malicious URL is https://ttraff.ru/pify?keyword=b.+com+2nd+year+all+books+pdf, which likely leads to further malicious content. The document body also contains a call-to-action phrase, reinforcing the lure.

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.ru/pify?keyword=b.+com+2nd+year+all+books+pdf
    • http://files.windsweptpoodles.com/uploads/1/3/0/8/130874213/4441498.pdf
    • http://files.wiseschoolofmusic.com/uploads/1/3/1/6/131636651/samonowowomori.pdf
    • http://files.nigella--sativa.com/uploads/1/3/0/9/130969151/b5008c210fa19bb.pdf
    • http://files.poehaku.com/uploads/1/3/1/6/131607239/ab7f23f.pdf
    • http://files.taylormadecafe.com/uploads/1/3/1/4/131407565/jumarozu_kiziros_zolewekirubof_kizemorivav.pdf
    • https://cdn.shopify.com/s/files/1/0432/0657/4238/files/lurizuzetujewemikerifib.pdf
    • https://cdn.shopify.com/s/files/1/0428/2191/0687/files/children_s_bedtime_stories.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tefukina.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46391305542.pdf
    • https://cdn.shopify.com/s/files/1/0434/6567/0806/files/81962824445.pdf
    • https://cdn.shopify.com/s/files/1/0432/8387/3942/files/install_cuda_10._0.pdf
    • https://cdn.shopify.com/s/files/1/0432/9911/1070/files/75769674236.pdf
    • https://cdn.shopify.com/s/files/1/0428/8066/3705/files/96546550557.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8758/files/felofamujowekovulatot.pdf
    • https://cdn.shopify.com/s/files/1/0439/8029/2254/files/aws_summit_2016.pdf
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/bhagavath_geetha_malayalam.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_off0000609c.bin
5ce50974f2baae9b723deb08829a3afed213235fd08d6bc9371908b28e3686ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x609C 5820 bytes
font_01_sfnt_off00007451.bin
7bb91423d63eb6bd7c2657278979848d60b7d38679106ec23dbd755ba6ab3d32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7451 2320 bytes
font_02_sfnt_off00007ea0.bin
a6de01b55654f73d50cfd190ea508663cf932232d3dccfd4861b2bd56089d909		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA0 9980 bytes
font_03_sfnt_off0000a116.bin
4362e686776cae9b5e877a8e5de4a1ff5ae9966626bcf1046762b8e3a01bbea2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA116 16224 bytes
font_04_sfnt_off0000b69f.bin
9bb21aa1b44f9bc5b781b6eabe6fb92a260aedf4bc578533986ab122167cdeb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB69F 3696 bytes

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