Malicious PDF — malware analysis report

Static analysis result for SHA-256 8817c3086e68ba14…

MALICIOUS

PDF

42.1 KB Created: 2020-08-01 22:28:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: abab6ecce3fbd11dd0c63c93d7723391 SHA-1: e8937719c35c6a0964fd686edb47cc0c43d67056 SHA-256: 8817c3086e68ba14d5b62cf7c65a68981fd2a80c99e1b76eb0610b070e984153
140 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one prominent link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Consumer reports best mattresses 2016' and a URL that appears to be part of a link farm designed to attract traffic. The presence of a callback lure heuristic further suggests a phishing or scam attempt.

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=consumer+reports+best+mattresses+2016
    • http://files.danielles-boutique.com/uploads/1/3/2/7/132710603/sozasigosejikej_nogelotado.pdf
    • http://files.morrisadvohealth.com/uploads/1/3/1/4/131482864/ca9a98869780f3.pdf
    • http://files.caregiverscontact.com/uploads/1/3/1/4/131438207/57c9197448.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/naduz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/52325197595.pdf
    • https://cdn.shopify.com/s/files/1/0434/2949/4940/files/58631958712.pdf
    • https://cdn.shopify.com/s/files/1/0429/0550/1852/files/rusorilexikosudiduf.pdf
    • https://cdn.shopify.com/s/files/1/0437/2296/5160/files/92017992700.pdf
    • https://cdn.shopify.com/s/files/1/0433/1474/1413/files/febinobezibakipe.pdf
    • https://cdn.shopify.com/s/files/1/0438/1320/8221/files/futata.pdf
    • https://cdn.shopify.com/s/files/1/0434/1334/0312/files/74173274060.pdf
    • https://cdn.shopify.com/s/files/1/0431/1921/4756/files/supumux.pdf
    • https://cdn.shopify.com/s/files/1/0432/4465/0651/files/sunitubagekamed.pdf
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/janapudadumudozenekada.pdf
    • https://cdn.shopify.com/s/files/1/0437/2499/6773/files/zozedo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9612/1251/files/poxuxoxefenokexuki.pdf
    • https://cdn.shopify.com/s/files/1/0428/9495/0559/files/dibonirudebinopomexunaf.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_off000065ed.bin
9339c9b69fc3cce68ffadd5f0ec3a96d58e42f45a2a8d13a1c1b4d1397beb955
pdf-font-stream PDF embedded font (sfnt) at offset 0x65ED 5456 bytes
font_01_sfnt_off00007858.bin
ca7d6450b7c086ce9f3ddb9883e8ef0d22b8ef134b97264d0ac75c93d096204c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7858 10180 bytes