Malicious PDF — malware analysis report

Static analysis result for SHA-256 a40fc86333fab956…

MALICIOUS

PDF

46.5 KB Created: 2020-08-30 03:39:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57cb97e0ded30082bbb390a73d485621 SHA-1: de286e8ee2788829c4835dc60b58bc2189b2202f SHA-256: a40fc86333fab95616b1bed2c3347b41859cfffc03575c0f6cace69c8b5099fe
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to a URL that appears to be a lure for 'Sam's club online cake book'. This URL is embedded within the document body, alongside numerous other links to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning tactic. The primary malicious URL is likely intended to redirect users to a phishing or malware distribution site.

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.me/wix?keyword=sam%2527s+club+online+cake+book
    • https://cdn.shopify.com/s/files/1/0432/6513/0658/files/easy_campfire_guitar_songs.pdf
    • https://cdn.shopify.com/s/files/1/0438/5131/7408/files/alquran_gratis_untuk_laptop.pdf
    • https://cdn.shopify.com/s/files/1/0436/0303/4276/files/runescape_goblin_diplomacy.pdf
    • https://cdn.shopify.com/s/files/1/0433/4115/2421/files/used_vehicle_information_package_ontario.pdf
    • https://cdn.shopify.com/s/files/1/0432/3429/5966/files/33029052619.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87277754858.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/ukulele_fingerpicking_lessons.pdf
    • https://cdn.shopify.com/s/files/1/0431/9376/1941/files/xufagexugodofinoxamimarov.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81603963226.pdf
    • https://cdn.shopify.com/s/files/1/0434/3503/2737/files/44545109844.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4977/files/rectification_of_errors_questions_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0428/8145/0147/files/jks_to_pem.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sotuxinonuwirumedubisaz.pdf
    • https://cdn.shopify.com/s/files/1/0434/1615/8359/files/89649881827.pdf
    • https://cdn.shopify.com/s/files/1/0435/4313/4362/files/carprog_user_manual.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_off000069c6.bin
000c7ee3cd7d127f8bcc68682dfed9cc49535110902a99eac1709aeeb1655987
pdf-font-stream PDF embedded font (sfnt) at offset 0x69C6 4992 bytes
font_01_sfnt_off00007a9f.bin
bb524cd5125eed2c3448ed7d57dd7d64c88fd31addbe99235e20bf87ecfd49ff
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A9F 10728 bytes
font_02_sfnt_off00009f4d.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F4D 4324 bytes