Malicious PDF — malware analysis report

Static analysis result for SHA-256 e346d069d91d7d2d…

MALICIOUS

PDF

46.2 KB Created: 2020-07-20 02:43:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81096fe7b48ae0e1e1334daa37656383 SHA-1: 668b64a1154c237e999e357c6844f1ea3f7a38b5 SHA-256: e346d069d91d7d2da313ac8754f466212e8e08c3c651fb58ee7afb005165e926
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary link directs users to 'ttraff.ru', which is flagged as a malicious redirector. Another heuristic identified a PDF link farm, suggesting an attempt to artificially inflate search engine rankings or distribute malicious content. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

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/wb?keyword=html%20to%20pdf%20java%20api%20free
    • http://files.chapinternational.org/uploads/1/3/2/3/132302736/bobanejusanujagadil.pdf
    • http://files.clustersmoms.net/uploads/1/3/1/4/131407709/2795860.pdf
    • http://files.passexpressmedia.com/uploads/1/3/2/6/132681954/7395908.pdf
    • http://files.lionsdiabetesawareness.org/uploads/1/3/0/7/130739398/gibozomupeti_dewudon.pdf
    • http://files.chapint
    • https://remaxobiran480113780.files.wordpress.com/2020/06/nixasudosanonivodo.pdf
    • https://jopifiwuwu.files.wordpress.com/2020/07/vakum.pdf
    • https://vafakeki.files.wordpress.com/2020/07/lunozaja.pdf
    • https://vozomurazawi.files.wordpress.com/2020/07/87985452272.pdf
    • https://sogifefuve684083845.files.wordpress.com/2020/07/25575978429.pdf
    • https://tedogodow.files.wordpress.com/2020/07/19139412253.pdf
    • https://rareduvap.files.wordpress.com/2020/07/8556108987.pdf
    • https://kepoxokop.files.wordpress.com/2020/06/78894805971.pdf
    • https://pamifanasote.files.wordpress.com/2020/06/56799562312.pdf
    • https://tiwelopo.files.wordpress.com/2020/07/87396169467.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/571475918.pdf
    • https://cdn.shopify.com/s/files/1/0429/7857/4490/files/88045187428.pdf
    • https://cdn.shopify.com/s/files/1/0430/9313/1425/files/25105072641.pdf
    • https://cdn.shopify.com/s/files/1/0434/7848/3096/files/rufuwonojipifoxume.pdf
    • https://cdn.shopify.com/s/files/1/0434/7691/0242/files/gukane.pdf
    • https://cdn.shopify.com/s/files/1/0432/6519/6197/files/97940085984.pdf
    • https://cdn.shopify.com/s/files/1/0433/4416/7064/files/32283296716.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_off00007718.bin
05126b5c2ade1c5178d6c31d74777034b68f418a74480211ecfd6ab46c48ec42
pdf-font-stream PDF embedded font (sfnt) at offset 0x7718 4788 bytes
font_01_sfnt_off0000876c.bin
e99c85ac759138400369d7068909e0a4ad343bb44af8f49df6e452a69f61a87f
pdf-font-stream PDF embedded font (sfnt) at offset 0x876C 10448 bytes