Malicious PDF — malware analysis report

Static analysis result for SHA-256 c310b8b6b8362653…

MALICIOUS

PDF

59.5 KB Created: 2020-08-19 16:43:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d1be16b460640ab79b5d738fba693317 SHA-1: bebb9f5aea8ef69e1319c99d079a5676316eefd9 SHA-256: c310b8b6b8362653523cac39e480fb8481cf73eacc930dadffd64481ce92965e
128 Risk Score

Malware Insights

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

The PDF contains a link farm with numerous embedded URLs, including a critical redirector link to ttraff.ru. The document body, though heavily obfuscated, contains a URL that appears to be part of this link farm. This suggests the PDF is designed to redirect users to malicious infrastructure, likely for phishing or malware distribution.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=cardiomyopathie+hypertrophique+forme+apicale
    • http://files.konop.net/uploads/1/3/1/4/131438460/9a213738.pdf
    • http://files.jenateer.org/uploads/1/3/1/0/131070356/3927505.pdf
    • https://cdn.shopify.com/s/files/1/0428/9177/2063/files/pajiwivogizifosozexero.pdf
    • https://cdn.shopify.com/s/files/1/0431/6502/4412/files/lajojudevelenimumunuvuteg.pdf
    • https://cdn.shopify.com/s/files/1/0434/0239/5813/files/78177108513.pdf
    • https://cdn.shopify.com/s/files/1/0433/9548/1750/files/saxanujulaviwelapuwonisa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0101/1614/files/66397641118.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4017/files/negarisejolulim.pdf
    • https://cdn.shopify.com/s/files/1/0433/4741/1096/files/kevumolijedipuzazugazame.pdf
    • https://cdn.shopify.com/s/files/1/0432/8990/3259/files/natuvoba.pdf
    • https://cdn.shopify.com/s/files/1/0439/5322/5883/files/mazatrol_programming_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45287622464.pdf
    • https://cdn.shopify.com/s/files/1/0429/1300/5724/files/pibetunaguganoganitejimer.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009d9c.bin
a82fae16381e6e9a02d1628f2489a2cefac4ea64cfa1e2f9bb06188806d84245		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D9C 5244 bytes
font_01_sfnt_off0000af8b.bin
992feddbf16f4e1b31bcab87f49f520d34a813a63bfd90544391323f5299c9e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF8B 10304 bytes
font_02_sfnt_off0000d2d8.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD2D8 4324 bytes

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