Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea76e8b11a443b84…

MALICIOUS

PDF

49.7 KB Created: 2020-09-02 07:00:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 585317a052a9363e3e5c75672ac21af4 SHA-1: bcd45c6dd1705f3c05581c8f8a123ba82e251a75 SHA-256: ea76e8b11a443b84c8e7a9044e16557c312bb976c70c808cf19d2cab765cdf16
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, which is also present in the document body as a lure for the "hunger games full book online pdf". This link redirects to malicious infrastructure, indicating a phishing or social engineering attempt. The file also contains a large number of embedded links, many of which point to benign Shopify URLs, suggesting a link farm or SEO poisoning tactic to improve search engine visibility for malicious content.

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/wix?keyword=hunger+games+full+book+online+pdf
    • https://cdn.shopify.com/s/files/1/0449/3528/2856/files/understanding_earth_grotzinger.pdf
    • https://cdn.shopify.com/s/files/1/0428/6706/4991/files/7906768099.pdf
    • https://cdn.shopify.com/s/files/1/0439/0833/3736/files/break_into_wall_street.pdf
    • https://cdn.shopify.com/s/files/1/0434/4990/9415/files/28938196088.pdf
    • https://cdn.shopify.com/s/files/1/0429/9925/1097/files/union_budget_2020_bankersadda.pdf
    • https://cdn.shopify.com/s/files/1/0437/6687/4269/files/xorixa.pdf
    • https://cdn.shopify.com/s/files/1/0432/4596/1383/files/56102013887.pdf
    • https://cdn.shopify.com/s/files/1/0466/5009/7829/files/academic_journal_format_word.pdf
    • https://static.usrfiles.com/ugd/fa32a6_6af53e902003446ba6959329e884292f.pdf
    • https://static.usrfiles.com/ugd/ca32a8_e54d296623544fcfbdc0adf45c01bc25.pdf
    • https://static.usrfiles.com/ugd/09273f_36536441088b41d2aadd178e7cc11923.pdf
    • https://static.usrfiles.com/ugd/2d1648_4620a91b8c964fcaaf76b92d99583503.pdf
    • https://static.usrfiles.com/ugd/89c6ad_ca1cd8bb80864740816996c210304aaf.pdf
    • https://static.usrfiles.com/ugd/aec2ea_c9ff910599ff4ca1821703e961b45846.pdf
    • https://static.usrfiles.com/ugd/1fbf8b_598d3a85ff89489bab4243e9a50e35f0.pdf
    • https://static.usrfiles.com/ugd/913720_a334a34f09e3458aa5207d45edf98440.pdf
    • https://static.usrfiles.com/ugd/359e64_ec796e2a9f7149c5b9e1ef7fbbb3cf9b.pdf
    • https://static.usrfiles.com/ugd/fb5067_f18e4e45d60f4c8a94d9ed053fb62370.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_off00008412.bin
b3e44a22b31e55d00c70a96c92771b22728ca768b5ad39c5dfdf660e05344308
pdf-font-stream PDF embedded font (sfnt) at offset 0x8412 5524 bytes
font_01_sfnt_off000096c2.bin
31dbc9bb3efbac02bb223f749060c16a20373a596c55624231c70919fa75a06f
pdf-font-stream PDF embedded font (sfnt) at offset 0x96C2 10280 bytes