Malicious PDF — malware analysis report

Static analysis result for SHA-256 dba585b1b2e5d2f3…

MALICIOUS

PDF

47.9 KB Created: 2020-08-30 04:28:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2de248498f605d30cd14ba4d6b4a007 SHA-1: 212e6dabdfd573135c04b9fae82de28e87be0a9a SHA-256: dba585b1b2e5d2f38c4e04c19e180522b59d0b7d12fa94be50f1539648182a25
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One prominent link, 'https://ttraff.ru/wix?keyword=brother+hl-2280dw+wireless+setup+man', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, reinforcing the lure. The presence of multiple Shopify links suggests an attempt to blend malicious links with seemingly benign 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.ru/wix?keyword=brother+hl-2280dw+wireless+setup+man
    • https://cdn.shopify.com/s/files/1/0435/6302/4542/files/asm_exam_fm.pdf
    • https://cdn.shopify.com/s/files/1/0433/9915/1768/files/android_one_list_2018.pdf
    • https://cdn.shopify.com/s/files/1/0429/2653/8911/files/how_many_countries_in_the_world_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/5380/0859/files/52734928770.pdf
    • https://cdn.shopify.com/s/files/1/0433/8358/6977/files/ccna_exam_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/5529/9237/files/bituxazurugiwuparo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4357/7256/files/xepisu.pdf
    • https://cdn.shopify.com/s/files/1/0432/9511/3374/files/40407939728.pdf
    • https://cdn.shopify.com/s/files/1/0432/6152/6166/files/2188084648.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/suramagufumaxuragozud.pdf
    • https://cdn.shopify.com/s/files/1/0433/9567/8357/files/54126046858.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_off000079fe.bin
5ff5fa84793d6a717c4dbe5a15f9cc3b33d1d7a7572d9169fd04badf1c4afa3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79FE 5840 bytes
font_01_sfnt_off00008dcf.bin
6f1403697826d334ff6cd8e83a5b4128f8cd0535b2143d132d1bbb24c316e364		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DCF 10480 bytes

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