Malicious PDF — malware analysis report

Static analysis result for SHA-256 a06c1872043abc71…

MALICIOUS

PDF

41.8 KB Created: 2020-08-31 13:15:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53ca15d1f6daab0eeda4a7be443d1578 SHA-1: 3e17f9a2228bd6f69b6074755de30eed7b667727 SHA-256: a06c1872043abc716729f4c889c76315aa24c513846a70403a4b5daf78e97ae5
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The PDF also contains a link farm heuristic, indicating a broader campaign to distribute malicious links, likely for phishing or malware delivery.

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/wix?keyword=objetivos+de+estudio
    • https://static.usrfiles.com/ugd/3ceeb9_50a4138d396641cd999c671ead7322d9.pdf
    • https://static.usrfiles.com/ugd/d94ae5_abc78b4647044267a56d1bab8f2a1f0e.pdf
    • https://static.usrfiles.com/ugd/63d3ad_ff516b5555464bc193b29125c6ce4d85.pdf
    • https://static.usrfiles.com/ugd/b8c837_f806d6b041e149b5afb2ac51ffb36c52.pdf
    • https://cdn.shopify.com/s/files/1/0429/3279/7599/files/vosoj.pdf
    • https://cdn.shopify.com/s/files/1/0430/8362/8708/files/italian_english_bilingual_visual_dictionary_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/0528/8352/files/gotunedita.pdf
    • https://cdn.shopify.com/s/files/1/0435/4369/1419/files/doxezebinat.pdf
    • https://cdn.shopify.com/s/files/1/0436/3298/4222/files/kruger_national_park_guided_hikes.pdf
    • https://cdn.shopify.com/s/files/1/0437/7329/6801/files/avast_free_antivirus_old_version.pdf
    • https://cdn.shopify.com/s/files/1/0439/0292/7003/files/69126364424.pdf
    • https://cdn.shopify.com/s/files/1/0436/2685/6601/files/apprendre_l_anglais_commercial.pdf
    • https://cdn.shopify.com/s/files/1/0447/0459/6122/files/24879167252.pdf
    • https://cdn.shopify.com/s/files/1/0439/1780/3675/files/best_corporate_branding_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0428/2944/7335/files/malibu_shopping_guide.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063d9.bin
a2a6395d81e311f5875d4a49857e072a36d9f9accae13426e2bebbc2d643fed0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63D9 4784 bytes
font_01_sfnt_off00007438.bin
f4e64a5e147f2fc11add48125691ab8abfc145c647908ff5a947475c1cc85c26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7438 11272 bytes

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