Malicious PDF — malware analysis report

Static analysis result for SHA-256 1adf04b450b6ce91…

MALICIOUS

PDF

33.9 KB Created: 2020-08-21 14:20:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b845285b28252159094258aa8f7c7e8 SHA-1: 352c83491523d01d0af05e79520469508c21afae SHA-256: 1adf04b450b6ce919faa1ca0ee8b16f97e06e4035d2a763fda34acbec3049013
150 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for containing a malicious redirector link and a large number of external PDF links, suggesting a link farm. The ML classifier also strongly indicated maliciousness. The document body contains obfuscated text and URLs, including the primary redirector URL. The primary purpose appears to be to lure users to malicious content through a chain of redirects.

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=alfani+shoes+size+guide
    • http://files.mayusaeki.com/uploads/1/3/1/4/131407632/564870.pdf
    • http://files.mycpdc.com/uploads/1/3/0/7/130739814/8671139.pdf
    • http://files.straightoutscribes.com/uploads/1/3/0/7/130775737/d76efb1276dd882.pdf
    • https://cdn.shopify.com/s/files/1/0437/3417/1797/files/jazoferalexivupibitolases.pdf
    • https://cdn.shopify.com/s/files/1/0435/8511/0177/files/16532531721.pdf
    • https://cdn.shopify.com/s/files/1/0431/1541/3661/files/82836897239.pdf
    • https://cdn.shopify.com/s/files/1/0431/0682/8441/files/89946425562.pdf
    • https://cdn.shopify.com/s/files/1/0438/1189/7504/files/11877424462.pdf
    • https://cdn.shopify.com/s/files/1/0434/7042/2180/files/24419227098.pdf
    • https://cdn.shopify.com/s/files/1/0433/6176/3480/files/87917363004.pdf
    • https://cdn.shopify.com/s/files/1/0432/5448/1056/files/wuzinulisekagimig.pdf
    • https://cdn.shopify.com/s/files/1/0433/9764/4449/files/aviary_app_apk.pdf
    • https://cdn.shopify.com/s/files/1/0434/5777/3725/files/27515776111.pdf
    • https://cdn.shopify.com/s/files/1/0429/8748/7385/files/zuwalaxomuvobi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2865/9870/files/child_support_guidelines_in_louisiana.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_off0000486e.bin
db2a717c54c245415dc435fa2f59f26df07c58411c47c3cbe0062e8d108fa081		 pdf-font-stream PDF embedded font (sfnt) at offset 0x486E 5112 bytes
font_01_sfnt_off000059d9.bin
e9f9e748d26b5a051b48f9734966ec5e8dae414fbd5df37725b799464ab90374		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59D9 9740 bytes

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