Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a82c9bdda59dbd7…

MALICIOUS

PDF

64.8 KB Created: 2020-08-30 01:59:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e51dec02debf1877be974ffbc76c9e0 SHA-1: 7538864e880d15fac93a4d32cb9599b9b3f86238 SHA-256: 4a82c9bdda59dbd72990a6cdc2a103d22a34dd472c0201612bfa0a9d08df92c2
128 Risk Score

Malware Insights

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

The PDF contains a prominent link that is labeled as a download button, enticing the user to click it. This link redirects to a malicious URL, indicating a phishing or malware distribution attempt. The PDF also functions as a link farm, with many embedded links pointing to Shopify domains, likely for SEO manipulation to improve search engine ranking for the malicious content.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=easy+driver+pack+win+10+64bit
    • https://cdn.shopify.com/s/files/1/0435/1728/0408/files/29327558367.pdf
    • https://cdn.shopify.com/s/files/1/0432/0490/3073/files/wibiwifizugogotarupuboj.pdf
    • https://cdn.shopify.com/s/files/1/0431/7075/8820/files/83135159012.pdf
    • https://cdn.shopify.com/s/files/1/0435/9002/5375/files/pozatugokox.pdf
    • https://cdn.shopify.com/s/files/1/0430/5082/7929/files/nakilunone.pdf
    • https://cdn.shopify.com/s/files/1/0431/7193/8461/files/89986307740.pdf
    • https://cdn.shopify.com/s/files/1/0431/2530/9601/files/negedekeb.pdf
    • https://cdn.shopify.com/s/files/1/0462/3617/2437/files/charter_club_sheets_on_sale.pdf
    • https://cdn.shopify.com/s/files/1/0433/6448/3240/files/66167830643.pdf
    • https://cdn.shopify.com/s/files/1/0431/1344/7577/files/git_bash_profile.pdf
    • https://cdn.shopify.com/s/files/1/0432/3000/3358/files/autonics_counter_timer.pdf
    • https://static.usrfiles.com/ugd/b8c837_762b6dbac868490a9eb1d82683b1ecc1.pdf
    • https://static.usrfiles.com/ugd/3aee12_53aa97b3e7af4445a7131c351c3410c1.pdf
    • https://static.usrfiles.com/ugd/b8c837_f5333afdbc4d48c2979e4d8585a24a4f.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0000b599.bin
95da3fb6372bb7eeecc0970004e2dad9501935f5e58d3c6d7b0a6cc61e5b2f5b
decompressed-pdf-stream PDF FlateDecoded stream at offset 0xB599 27464 bytes
font_00_sfnt_off00007ebb.bin
3541b712262b6d2fb4d9dea669e67138488774784baaf9c0c0edcca50e1fe1db
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EBB 5564 bytes
font_01_sfnt_off000091d7.bin
0966f5949af7c70091c74e1a10ffae40c4906df7a641ea804ef87f27d5d8d986
pdf-font-stream PDF embedded font (sfnt) at offset 0x91D7 10508 bytes
font_03_sfnt_off0000e762.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xE762 4324 bytes