Malicious PDF — malware analysis report

Static analysis result for SHA-256 db551fdff911d356…

MALICIOUS

PDF

69.3 KB Created: 2020-08-21 15:23:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a5d694c9afebe8828cbf11e8243dc6e1 SHA-1: b7014eac4e59b201ce2e0cec997decf897938f6c SHA-256: db551fdff911d35656c628b9373598146fc58837a62b43f9ffe033dd1f171cd7
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to ttraff.com. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the malicious URL, suggesting a social engineering lure to trick users into downloading potentially harmful content.

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.com/pify?keyword=partnership+agreement+template+word+free
    • http://files.usagaslogs.com/uploads/1/3/1/4/131408581/b19098.pdf
    • http://lutatevu.christinakompson.com/uploads/1/3/0/8/130813710/legikixejesuxesitew.pdf
    • http://zozob.hillandstump.com/uploads/1/3/0/8/130874631/5185283.pdf
    • https://cdn.shopify.com/s/files/1/0431/3455/0173/files/fusukubulufakixumeburix.pdf
    • https://cdn.shopify.com/s/files/1/0433/4315/1272/files/jonuxumalazamasibagat.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71860998709.pdf
    • https://cdn.shopify.com/s/files/1/0430/6763/7917/files/free_offline_amplified_bible_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/wiweduwafo.pdf
    • https://cdn.shopify.com/s/files/1/0432/0329/7437/files/litarotesaf.pdf
    • https://cdn.shopify.com/s/files/1/0428/8079/4790/files/wumofubi.pdf
    • https://cdn.shopify.com/s/files/1/0433/6146/8567/files/drill_sergeant_modules_army_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/8535/6449/files/mediturivuxa.pdf
    • https://cdn.shopify.com/s/files/1/0431/2629/2634/files/zovenobijutegixikefu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8168/6423/files/49171082886.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6845/files/40581115149.pdf
    • https://cdn.shopify.com/s/files/1/0428/3134/7868/files/97247971691.pdf
    • https://cdn.shopify.com/s/files/1/0430/1737/1797/files/33684289646.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_off0000c61a.bin
a17885b4fd577e0298a64705d5055d2ac7c2363fd7008e9cf236b3df412a17d8
pdf-font-stream PDF embedded font (sfnt) at offset 0xC61A 2828 bytes
font_01_sfnt_off0000d014.bin
cd6edbdd2d1c01f04385d5e91c4535351eb37f4f292241374f73161e693a888e
pdf-font-stream PDF embedded font (sfnt) at offset 0xD014 5548 bytes
font_02_sfnt_off0000e2d1.bin
f5db336d3060f17618630354f69324d7f118942b72092f8aaf716a4478b5cefc
pdf-font-stream PDF embedded font (sfnt) at offset 0xE2D1 10096 bytes