Malicious PDF — malware analysis report

Static analysis result for SHA-256 2da5f760f3cc930c…

MALICIOUS

PDF

76.0 KB Created: 2020-09-07 17:19:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 305a0b6bde4e37cdabab2e3f64b603f0 SHA-1: 94b826e0f7d687e8066ec41c05a57aaf8a90f01a SHA-256: 2da5f760f3cc930cc8c0358d6b015461aa2abf2d1a480f8dd4e86b2f41c42265
130 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, disguised as a download button for a 'calorimetry worksheet with answer key'. This suggests a phishing or social engineering attack aiming to lead the user to malicious content. The PDF also contains a large number of external links, many pointing to Shopify, which is unusual for a legitimate document and likely part of a link farm for SEO manipulation or to obscure the malicious redirector.

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.link/wix?keyword=calorimetry+worksheet+with+answer+key
    • https://cdn.shopify.com/s/files/1/0431/3923/5989/files/82452913640.pdf
    • https://cdn.shopify.com/s/files/1/0431/3825/2957/files/93852310414.pdf
    • https://cdn.shopify.com/s/files/1/0430/5240/0793/files/neverwinter_guardian_fighter_guide_mod_15.pdf
    • https://cdn.shopify.com/s/files/1/0430/4027/6642/files/fuxuwus.pdf
    • https://cdn.shopify.com/s/files/1/0430/8631/5682/files/jitetuwapivow.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6845/files/71861665411.pdf
    • https://cdn.shopify.com/s/files/1/0432/4166/8763/files/14465437060.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/92884725126.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/16187443352.pdf
    • https://cdn.shopify.com/s/files/1/0438/2595/4973/files/aghori_wallpaper_apk.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96672573922.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41877136991.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/1/0430/4027/66

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e50d.bin
a17885b4fd577e0298a64705d5055d2ac7c2363fd7008e9cf236b3df412a17d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE50D 2828 bytes
font_01_sfnt_off0000ef07.bin
dea05544274cd11bca701c0cdea274645f17bd46094b381413d8a6e93b5d0d46		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF07 5088 bytes
font_02_sfnt_off0001003b.bin
ae0e823ab7406cfe402d1f263bb97d1c905cede2d7d92d22f203de8b64a8ca34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1003B 10044 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.