Malicious PDF — malware analysis report

Static analysis result for SHA-256 fded0ef34a011f6c…

MALICIOUS

PDF

41.9 KB Created: 2020-08-30 17:39:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a23912833fb16f934c4208a42eef488b SHA-1: cdab788de7970093dc3cc061be0a29d09d7d9ce1 SHA-256: fded0ef34a011f6c64d491122cc5d3c4f75d9dd5d31e074bfd912a5e9402d9d0
150 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is used in conjunction with a lure of 'interactive lapbook templates'. The file also contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm or SEO manipulation tactic. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive document.

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/wix?keyword=interactive+lapbook+templates
    • https://cdn.shopify.com/s/files/1/0438/0976/7584/files/family_tree_template_pinterest.pdf
    • https://cdn.shopify.com/s/files/1/0434/1379/9066/files/30887275810.pdf
    • https://cdn.shopify.com/s/files/1/0437/8578/1397/files/gikutanugufaloxabi.pdf
    • https://cdn.shopify.com/s/files/1/0427/8868/3932/files/bifotipuzobexatupalomil.pdf
    • https://cdn.shopify.com/s/files/1/0429/1608/5916/files/ridexuwos.pdf
    • https://cdn.shopify.com/s/files/1/0433/8424/2337/files/35630953285.pdf
    • https://cdn.shopify.com/s/files/1/0440/8908/2006/files/pufuziwafobisobama.pdf
    • https://static.usrfiles.com/ugd/b8c837_080ec4ffa03b4f358c3fdd87102182c3.pdf
    • https://static.usrfiles.com/ugd/7e0eb0_675373d550c14b5190db1ef118496cd4.pdf
    • https://static.usrfiles.com/ugd/ec0c41_0227800e7d56404e8f9ca4f4a1097a1a.pdf
    • https://static.usrfiles.com/ugd/b8c837_1c3812dcd03c437c93619d82f49a012a.pdf
    • https://cdn.shopify.com/s/files/1/0434/0301/8392/files/jidewope.pdf
    • https://cdn.shopify.com/s/files/1/0435/2838/8772/files/51251026584.pdf
    • https://cdn.shopify.com/s/files/1/0429/6356/6755/files/17589461384.pdf
    • https://cdn.shopify.com/s/files/1/0435/0817/0918/files/19857022365.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_off00005c32.bin
315abd9ec60925de125d267f37d1293a69f30a9d82809907852f46044c259469
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C32 5280 bytes
font_01_sfnt_off00006dfe.bin
e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DFE 1800 bytes
font_02_sfnt_off0000768c.bin
ab22b6707cf1f772d6a4a69ed2f352728243a09b4c3a451473c5cbca42dcea33
pdf-font-stream PDF embedded font (sfnt) at offset 0x768C 10464 bytes