Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac61ed435f7bd071…

MALICIOUS

PDF

32.3 KB Created: 2020-08-22 14:43:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 753931086154ed8135b102789af3845d SHA-1: 5933f1e2615395fa14d1e1f3b2045a9f457c4b55 SHA-256: ac61ed435f7bd0717f70de8d6247d019aa81ed48a60b910a95deb6440cbed7a5
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 'https://ttraff.com/pify?keyword=i+love+you+full+movie++free'. This URL is likely part of a social engineering lure, attempting to trick users into believing they are accessing free movie content. The document also contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of link farm or SEO poisoning techniques. The primary malicious IOC is the redirector URL.

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=i+love+you+full+movie++free
    • http://files.ryenaturals.com/uploads/1/3/1/4/131406797/kavidek.pdf
    • https://cdn.shopify.com/s/files/1/0429/5573/5193/files/effective_public_speaking_skills.pdf
    • https://cdn.shopify.com/s/files/1/0429/1087/5815/files/82975683523.pdf
    • https://cdn.shopify.com/s/files/1/0434/6894/7616/files/50538336351.pdf
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/charlotte_s_web_script.pdf
    • https://cdn.shopify.com/s/files/1/0435/0076/5336/files/bonuvu.pdf
    • https://cdn.shopify.com/s/files/1/0430/0003/7527/files/taludubidoxanidixufo.pdf
    • https://cdn.shopify.com/s/files/1/0434/1979/5623/files/wcf_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0437/1765/6731/files/pulmonary_hypertension_guidelines_2020.pdf
    • https://cdn.shopify.com/s/files/1/0432/0926/1220/files/global_business_today_8th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0437/1342/9655/files/case_interviews_cracked_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/9685/1103/files/8564966031.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3768/files/english_speaking_book_free_download_in_gujarati_to_english.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_off00004281.bin
b264ea876897041200239a5b3572d417a062009b1b59e7b385de05865e48c756		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4281 4624 bytes
font_01_sfnt_off00005237.bin
219028899f58e25b0a89fd6afa9d33bf8d675f9826fe619e951b20db1c26e1b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5237 10096 bytes

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