Malicious PDF — malware analysis report

Static analysis result for SHA-256 54312c667d7e495e…

MALICIOUS

PDF

34.4 KB Created: 2020-08-23 03:26:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5caafb7364952b047f7a97357872bb0a SHA-1: b5ff6ced54f53f9c64e342ee190257f9ee602f6c SHA-256: 54312c667d7e495e6824791d0394106d8f6ecfc14063cc2d8d4fb2038a088dba
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which point to a redirector service. The primary malicious URL identified is 'https://ttraff.cc/pify?keyword=reelin+in+the+years+piano+sheet+music', which is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it is the intended lure. The presence of a link farm and a malicious redirector indicates a probable phishing or malware distribution attempt.

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.cc/pify?keyword=reelin+in+the+years+piano+sheet+music
    • http://toxaj.thankyoumediagroup.com/uploads/1/3/0/7/130740537/1749447.pdf
    • http://kelum.totmiarchives.org/uploads/1/3/0/9/130969742/ralem_zotisola_tokada_napog.pdf
    • https://cdn.shopify.com/s/files/1/0430/2408/9242/files/fepawokorurovizidobogivom.pdf
    • https://cdn.shopify.com/s/files/1/0435/7075/7791/files/employment_news_paper_tamil_this_week.pdf
    • https://cdn.shopify.com/s/files/1/0432/7754/9726/files/60253903991.pdf
    • https://cdn.shopify.com/s/files/1/0429/5180/3039/files/aalwar_tamil_movie_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/8697/8984/files/49116278908.pdf
    • https://cdn.shopify.com/s/files/1/0427/6820/3942/files/74546631081.pdf
    • https://cdn.shopify.com/s/files/1/0428/7276/6631/files/tv_guide_lexington_ky.pdf
    • https://cdn.shopify.com/s/files/1/0437/6818/4993/files/ispad_dka.pdf
    • https://cdn.shopify.com/s/files/1/0438/0416/4257/files/princeton_review_books.pdf
    • https://cdn.shopify.com/s/files/1/0437/3594/1274/files/4928193159.pdf
    • https://cdn.shopify.com/s/files/1/0437/2817/5255/files/fabamureridegi.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_off00004962.bin
bb4e99ff7172f3397262d8a2250c3ce88ca7c8bc5b299f9efaa3134eef7691d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4962 5280 bytes
font_01_sfnt_off00005b2f.bin
1e6591b46d6a8e0a8000f47e84557c043d50a825c390ca38784638017cb7e6d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B2F 9916 bytes

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