Malicious PDF — malware analysis report

Static analysis result for SHA-256 3aeedba265175eed…

MALICIOUS

PDF

52.9 KB Created: 2020-08-25 03:49:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 16fc41a06873d6320503b30ab01cca91 SHA-1: a6dc705617fe58d353ad4cdeb13070ade0b4030a SHA-256: 3aeedba265175eeda77af5826208e2422c085a287ee2d799b8855dfa0055d6f0
128 Risk Score

Malware Insights

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

The PDF file contains a high number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Arch Linux' and includes the malicious URL, suggesting a lure for users seeking software. The presence of a 'download button' heuristic further supports the deceptive download attempt. The primary malicious URL is https://ttraff.com/pify?keyword=arch+linux+full+iso, which is likely used to redirect the user to a malicious payload.

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=arch+linux+full+iso
    • http://rover.selinachustudio.com/uploads/1/3/0/7/130775181/tedax.pdf
    • https://cdn.shopify.com/s/files/1/0431/1570/8580/files/65585899054.pdf
    • https://cdn.shopify.com/s/files/1/0428/7909/0854/files/18454007927.pdf
    • https://cdn.shopify.com/s/files/1/0446/5822/9411/files/tar_gz_unzip.pdf
    • https://cdn.shopify.com/s/files/1/0441/2289/8584/files/mebaromuman.pdf
    • https://cdn.shopify.com/s/files/1/0431/4457/7178/files/41809249572.pdf
    • https://cdn.shopify.com/s/files/1/0435/0718/7872/files/wosuleselifudoburo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38970143778.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/rujerijawe.pdf
    • https://cdn.shopify.com/s/files/1/0441/0019/0360/files/73141343770.pdf
    • https://cdn.shopify.com/s/files/1/0444/4710/5191/files/bagekirivalekixinasubisu.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_off00007ff2.bin
41f2a0c4af0dc7e676cff1085d199252c6466d1bb0fc2787b88b1cd5b4d24a5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FF2 4500 bytes
font_01_sfnt_off00008f24.bin
a42f78000622cd8c74e085e81ebb5e91f2da4d6f9aba8532b7c7ec42d816781f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F24 13124 bytes
font_02_sfnt_off0000b935.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB935 4324 bytes

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