Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e74d7470e27fab6…

MALICIOUS

PDF

46.2 KB Created: 2020-08-30 06:07:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b1f8e812678f8bacee86e44099a6c055 SHA-1: 00cd1d5c4ee93a7938b6a2d00119d57dc6c50463 SHA-256: 2e74d7470e27fab603550fe8ff36aefc882665c9e58157fc70c250ed24e22419
152 Risk Score

Malware Insights

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

The PDF file contains a high number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain. This suggests a link farm or SEO poisoning tactic to drive traffic to malicious infrastructure. The document body, though heavily obfuscated, contains text related to academic materials and the malicious URL, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.club/wix?keyword=principles+of+economics+8th+edition+answers
    • https://cdn.shopify.com/s/files/1/0431/7826/2692/files/sinogixinaluxaf.pdf
    • https://cdn.shopify.com/s/files/1/0435/3510/6200/files/26808155547.pdf
    • https://cdn.shopify.com/s/files/1/0427/7754/2823/files/rexusuvi.pdf
    • https://cdn.shopify.com/s/files/1/0435/6187/7665/files/biography_of_abraham_lincoln_in_short.pdf
    • https://cdn.shopify.com/s/files/1/0438/0652/3552/files/pobajudibupuvamix.pdf
    • https://cdn.shopify.com/s/files/1/0462/5019/7146/files/download_ready_player_one_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0438/2231/7730/files/rinakasuju.pdf
    • https://cdn.shopify.com/s/files/1/0431/3228/9178/files/tejenomiridawopumurifu.pdf
    • https://static.usrfiles.com/ugd/3bf302_1637d15db84d49f1b03afe586080705e.pdf
    • https://static.usrfiles.com/ugd/b8c837_eb4a7c0820d9481aae143730105e9e36.pdf
    • https://static.usrfiles.com/ugd/e73fea_1a93b19f3367479eaf49d181bdcaa199.pdf
    • https://static.usrfiles.com/ugd/d17951_ec595cbe8ec946c5b08728a695e7cba3.pdf
    • https://cdn.shopify.com/s/files/1/0431/8402/9854/files/kexuzakupemunafasewubuli.pdf
    • https://cdn.shopify.com/s/files/1/0434/4024/2840/files/94562164804.pdf
    • https://cdn.shopify.com/s/files/1/0435/2969/9482/files/greece_budget_travel_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066b1.bin
04fff4935b31f2d750fd755222e9beba92c26ac630bb7446e634ba7b519d3984
pdf-font-stream PDF embedded font (sfnt) at offset 0x66B1 5472 bytes
font_01_sfnt_off00007917.bin
3dbf3675e06acbb476a6a51690589f8eb6eefd070409d19e59ba1b1e72a190a2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7917 10956 bytes
font_02_sfnt_off00009dcf.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x9DCF 4324 bytes