Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6acf9ec675b16ea…

MALICIOUS

PDF

122.5 KB Created: 2020-08-01 09:28:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02b0a316e5bad14949afa04dce48ab11 SHA-1: 832654d2bf78df43a145c1b23bb75a9fb5613f3a SHA-256: a6acf9ec675b16ea7fc457f97999f4dc53289fd1b29c362e2dce28b48b0eb5f2
168 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link to 'https://ttraff.ru/pify?keyword=clicker+heroes+2+free', disguised as a lure for 'Clicker Heroes 2'. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDFs. The presence of an MFA lure heuristic suggests the ultimate goal may be to harvest session tokens or abuse multi-factor authentication, likely after the user clicks the malicious link.

Heuristics 5

  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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=clicker+heroes+2+free
    • http://files.parischeckout.com/uploads/1/3/0/7/130738712/gosawapavofixatuf.pdf
    • http://files.rockytopvacationhomerentals.com/uploads/1/3/0/7/130738998/sozaselewozubunado.pdf
    • http://files.stowefamilywellness.com/uploads/1/3/0/7/130739648/4953447.pdf
    • http://files.fundamentallysoundbasketball.net/uploads/1/3/2/6/132681954/febatuxutadudebebam.pdf
    • https://cdn.shopify.com/s/files/1/0429/5426/0643/files/52695832746.pdf
    • https://cdn.shopify.com/s/files/1/0428/8049/9879/files/doppelganger_dnd_5e.pdf
    • https://cdn.shopify.com/s/files/1/0431/3353/4357/files/91396212950.pdf
    • https://cdn.shopify.com/s/files/1/0431/8658/5749/files/82950208636.pdf
    • https://cdn.shopify.com/s/files/1/0432/9829/1870/files/77877671321.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/jufogowaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/6553/1806/files/ronakofabus.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/vilabegabidulurobororo.pdf
    • https://cdn.shopify.com/s/files/1/0428/2381/1239/files/sixoluzunuzerixozawamem.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_off00017be5.bin
c57d07ce5d65a2339eef6ca002b78cb01ee30af3fcfb2174fcc4d9481fa96996		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17BE5 4956 bytes
font_01_sfnt_off00018d0d.bin
71a24f642050d1c4710a54d6a28878158039ca91d98a51f2cfda4252c6e08ad2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18D0D 4580 bytes
font_02_sfnt_off00019c97.bin
daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19C97 1800 bytes
font_03_sfnt_off0001a525.bin
f8092d145066d39fad25df512015c628b64b8ad9184639a88c42d37a4c30c441		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A525 12504 bytes
font_04_sfnt_off0001cdd0.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1CDD0 4324 bytes

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