Malicious PDF — malware analysis report

Static analysis result for SHA-256 4df834060f20a534…

MALICIOUS

PDF

51.8 KB Created: 2020-08-04 03:01:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b6653618ffa3aabfad0434600fe1fd2 SHA-1: 2c2100bdc9104032959f9f5162d7394611ed9334 SHA-256: 4df834060f20a534b2cb55e0498367fe73f30d11a746c39e98196a73689d2d95
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains the string "despicable me script pdf" and the malicious URL, suggesting a lure to trick users into clicking the malicious link. No scripts were extracted, but the presence of a malicious redirector and a link farm indicates a phishing or scam 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.com/pify?keyword=despicable+me+script+pdf
    • http://duruf.tacosxavi.com/uploads/1/3/0/7/130738524/jasuvedogozu.pdf
    • http://files.blesseddisciples.com/uploads/1/3/1/6/131636954/ad87c152.pdf
    • http://files.alanbermanart.com/uploads/1/3/0/7/130739155/wasivezom-jatokukanasokiw-bupur-zutigafivifezu.pdf
    • http://files.seamusmurphysportfolio.com/uploads/1/3/2/6/132682737/9731989.pdf
    • http://files.judygrillo.com/uploads/1/3/1/8/131857213/jobovomuron.pdf
    • https://cdn.shopify.com/s/files/1/0429/9417/2058/files/fegaruwubupuwup.pdf
    • https://cdn.shopify.com/s/files/1/0429/9846/4661/files/lizexidubutuvulo.pdf
    • https://cdn.shopify.com/s/files/1/0448/0250/6909/files/install_opencl_ubuntu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1947/6896/files/62027799471.pdf
    • https://cdn.shopify.com/s/files/1/0433/1392/2206/files/ruvidase.pdf
    • https://cdn.shopify.com/s/files/1/0430/3906/4225/files/bulazideves.pdf
    • https://cdn.shopify.com/s/files/1/0432/4828/7912/files/rezexetumodo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8136/7712/files/bstc_result_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/7902/5318/files/balzac_and_the_little_chinese_seamstress.pdf
    • https://cdn.shopify.com/s/files/1/0432/1892/7778/files/31059067621.pdf
    • https://cdn.shopify.com/s/files/1/0433/1667/4713/files/davesebilatesebul.pdf
    • https://cdn.shopify.com/s/files/1/0430/8415/2986/files/ripozifetediwifejuzu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9654/7230/files/sabbath_school_lesson_powerpoints.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/
    • https://cdn.shopify.com/s/files/1/0448/0250/6909/files/install_op

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008d0a.bin
16bb3822b546c8ab7960e6a30d7d2dde7818f3cfc6822db9a8d5abe24c60e992
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D0A 5440 bytes
font_01_sfnt_off00009f71.bin
69397c4c87b79e2e12c32f8adc1ef4e474cf56e3e6cfbfea2af92f72ff1b2bca
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F71 10088 bytes