Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a1e8d984618797d…

MALICIOUS

PDF

36.1 KB Created: 2020-08-26 01:24:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e5d8f5c4552a97d229753dd2584df4f SHA-1: e178e4bd798f1e073a57b4866ad37d1fa8418ec0 SHA-256: 5a1e8d984618797d5b961f33bcef75e363822c1df7e2ca703c61aafd418460a9
120 Risk Score

Malware Insights

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

The PDF file contains a high number of embedded links, many of which point to a redirector service (ttraff.com) that is flagged as malicious. The document body, though heavily obfuscated, contains text related to educational material, suggesting a lure. The primary malicious URL is https://ttraff.com/pify?keyword=examen+segundo+bimestre+primer+grado+primaria+lainitas, which likely serves as a gateway to further malicious content or phishing pages.

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.com/pify?keyword=examen+segundo+bimestre+primer+grado+primaria+lainitas
    • http://xixuje.purposeqi.com/uploads/1/3/2/6/132681946/5755080.pdf
    • http://files.grantavebc.org/uploads/1/3/0/7/130738799/watobogake.pdf
    • http://files.danieleheon.com/uploads/1/3/1/6/131637190/kariwize_jefigi_xonevo_gijipoze.pdf
    • https://cdn.shopify.com/s/files/1/0434/6567/0806/files/asteraceae_especies.pdf
    • https://cdn.shopify.com/s/files/1/0430/9303/3111/files/54458052595.pdf
    • https://cdn.shopify.com/s/files/1/0428/0736/1703/files/40230909084.pdf
    • https://cdn.shopify.com/s/files/1/0433/9639/9269/files/bar_psi_kpa_conversion_chart.pdf
    • https://cdn.shopify.com/s/files/1/0435/2075/3823/files/net_framework_4._7_filehippo.pdf
    • https://cdn.shopify.com/s/files/1/0433/2149/1621/files/camera_angles_and_shots.pdf
    • https://cdn.shopify.com/s/files/1/0435/7311/7087/files/94126696831.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xidab.pdf
    • https://cdn.shopify.com/s/files/1/0432/3573/7755/files/41484926291.pdf
    • https://cdn.shopify.com/s/files/1/0450/3843/6516/files/tafsiira_afaan_oromoo.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_off00004120.bin
6995373d6c20a0c02f0a15df645b1e70ff0ffa178782d0d8e6e0a8e65a5e92f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4120 5324 bytes
font_01_sfnt_off00005316.bin
9670811d1494fc89a82787cc774533cff7da05b84ad852cd77b37fedb7c387e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5316 10000 bytes
font_02_sfnt_off0000738b.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x738B 4324 bytes

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