Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5d1eb28d2fba47f…

MALICIOUS

PDF

43.3 KB Created: 2020-08-01 22:18:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b98ffdc89a77322de72453eb5f8ecb7c SHA-1: 72c960d3fb6c6bccd05ddad832b4235a1c2a9931 SHA-256: b5d1eb28d2fba47fc3fe8b95bbf2c6d174510def821d027d4f407c15a88217db
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, suggesting an SEO manipulation or link farm tactic. The primary malicious URL identified is https://ttraff.ru/pify?keyword=da+705+pdf, which is known to host redirector infrastructure. The document body contains obfuscated text and embedded URLs, further supporting the malicious intent. No scripts were extracted from this sample.

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=da+705+pdf
    • http://files.treeoflifeph.com/uploads/1/3/0/7/130740196/wopiwunadaleni_pexidi_boliga_filawelelu.pdf
    • http://files.zoharpainting.com/uploads/1/3/0/7/130775002/mexokirarokej.pdf
    • http://files.builders-bargain.com/uploads/1/3/1/0/131070378/ranebijafu.pdf
    • https://cdn.shopify.com/s/files/1/0433/1575/7214/files/74505722828.pdf
    • https://cdn.shopify.com/s/files/1/0432/8698/6908/files/pesoneruwiwariwati.pdf
    • https://cdn.shopify.com/s/files/1/0432/3095/3627/files/fawemufuda.pdf
    • https://cdn.shopify.com/s/files/1/0428/4229/2390/files/45988790877.pdf
    • https://cdn.shopify.com/s/files/1/0434/0059/3557/files/rupapanutas.pdf
    • https://cdn.shopify.com/s/files/1/0433/5822/4549/files/deniroberabom.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5476/files/pitik.pdf
    • https://cdn.shopify.com/s/files/1/0432/7096/3350/files/zibusiruvupu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7949/8918/files/nejapikiriru.pdf
    • https://cdn.shopify.com/s/files/1/0434/8208/7588/files/88884910675.pdf
    • https://cdn.shopify.com/s/files/1/0432/2469/4939/files/jijesetijusimuferotepeko.pdf
    • https://cdn.shopify.com/s/files/1/0429/3551/7337/files/18320351467.pdf
    • https://cdn.shopify.com/s/files/1/0432/3121/5780/files/76210407016.pdf
    • https://cdn.shopify.com/s/files/1/0437/1588/7256/files/pewebebudijuve.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_off000059e1.bin
dbf5c5dcc5d99efd407e78b71e84daa36143a9e6c63e6fe0ae83d49c1d2cfd17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59E1 5052 bytes
font_01_sfnt_off00006b4b.bin
18fc329e4aa342c97f2648af2bcd11b8bc4210bc21f5fa3e4e08e6ede32db4fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B4B 5072 bytes
font_02_sfnt_off00007cba.bin
b3b9fb0cca92673b2eaff6600056d518444577c5471f977ef37ae1b452bb7ae9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CBA 9968 bytes

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