Malicious PDF — malware analysis report

Static analysis result for SHA-256 90f2fc6c91066f26…

MALICIOUS

PDF

40.8 KB Created: 2020-08-08 18:54:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a285fdf1d79f5f09f13646881dba8ba7 SHA-1: 456e345e113c1da00620d7af3ded23928c2efccb SHA-256: 90f2fc6c91066f269d7194ce8e44245e0555e17e354ef5b28a0256d9990a6822
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.ru). This suggests a link farm or redirection tactic to obscure the final malicious destination. The document body, though heavily obfuscated, contains the text 'data analysis pdf books' and the malicious URL, reinforcing the lure. The ML classifier strongly flagged this PDF as malicious.

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.ru/pify?keyword=data+analysis+pdf+books
    • http://files.hunchdesign.com/uploads/1/3/1/6/131606222/a669ecc25c.pdf
    • http://wudikexed.trackfourjournal.com/uploads/1/3/2/7/132710780/7848ed9da646e.pdf
    • http://files.growingtogetherpreschool.com/uploads/1/3/1/4/131437318/8087699.pdf
    • http://files.jeannecorrigal.com/uploads/1/3/1/4/131438500/kosuxupegitajilos.pdf
    • https://cdn.shopify.com/s/files/1/0438/7300/9819/files/61441887655.pdf
    • https://cdn.shopify.com/s/files/1/0429/2762/0249/files/sizozajola.pdf
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/bopugidutegiledixilinu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/11286786524.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/doworefobose.pdf
    • https://cdn.shopify.com/s/files/1/0435/6007/5427/files/14032107460.pdf
    • https://cdn.shopify.com/s/files/1/0428/6559/0438/files/nujuvikagiroxufuxav.pdf
    • https://cdn.shopify.com/s/files/1/0437/1021/8391/files/fikavapu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2869/2643/files/bupafororetiwuxusatamu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6769/5509/files/nitefetosogajelowu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5012/2916/files/499413792.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061bd.bin
15ea5d7f18490cfe2f9bd951e962da106b814c87d1d1c4704221542fb0a46db5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61BD 5244 bytes
font_01_sfnt_off000073b8.bin
a60d3238e38b681444c77945ee4fe212bff66d126c636c6215332ea6b83a188e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73B8 10256 bytes

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