Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5d8c6c9e3d90807…

MALICIOUS

PDF

57.0 KB Created: 2020-08-04 02:10:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 17a8dd1e2de7ee4a7a5d4b45182f91c2 SHA-1: 09f3387cbc698437f9a34d20453ae63a361ae07d SHA-256: a5d8c6c9e3d90807cdbfbef2b8a55e10ddfff7f0e7ba60a080c0e31d58f6b183
140 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, includes text related to 'articles of incorporation california pdf' and a URL that appears to be part of a link farm designed to attract search engine traffic. The presence of a callback lure heuristic further suggests a phishing or scam attempt, likely aiming to redirect users to malicious sites or solicit information.

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=articles+of+incorporation+california+pdf
    • http://files.thelearningoptions.co/uploads/1/3/0/7/130775528/zitubemapaxutilu.pdf
    • http://files.naturesconfluence.com/uploads/1/3/0/7/130775698/zifutoxufaguxusa.pdf
    • http://gagone.daleshandmadesoaps.com/uploads/1/3/2/6/132695278/a73ff25536.pdf
    • http://files.carsontidwell.com/uploads/1/3/1/4/131411199/914059.pdf
    • https://cdn.shopify.com/s/files/1/0432/1653/5720/files/malodomitabitekoriwoxobek.pdf
    • https://cdn.shopify.com/s/files/1/0436/1994/2563/files/fufurekipozovu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9243/4326/files/fuxozerizosewik.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tefukina.pdf
    • https://cdn.shopify.com/s/files/1/0430/9244/3303/files/53412782705.pdf
    • https://cdn.shopify.com/s/files/1/0436/7374/7609/files/31663526065.pdf
    • https://cdn.shopify.com/s/files/1/0435/2465/3224/files/31164581827.pdf
    • https://cdn.shopify.com/s/files/1/0435/1731/3176/files/26315894840.pdf
    • https://cdn.shopify.com/s/files/1/0435/8314/4104/files/gisudawiwopakusogol.pdf
    • https://cdn.shopify.com/s/files/1/0428/1594/6911/files/ronezeguled.pdf
    • https://cdn.shopify.com/s/files/1/0429/2041/1303/files/24711366185.pdf
    • https://cdn.shopify.com/s/files/1/0429/2381/9164/files/64900484705.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_off0000a205.bin
203118cee110594a0b07d4fbc77425ca932a71b8c9e36575a93b17b4dcb6d673
pdf-font-stream PDF embedded font (sfnt) at offset 0xA205 5140 bytes
font_01_sfnt_off0000b392.bin
cb2d41bba026ec3e00eb8079d9c59e90253b5f45500c3d3b4ef93bfab164430b
pdf-font-stream PDF embedded font (sfnt) at offset 0xB392 10456 bytes