Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d92efec156096cf…

MALICIOUS

PDF

62.3 KB Created: 2020-08-23 11:56:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98ac4f06be804e55dfadd589974deb8d SHA-1: 7129adea66c1485f8ea2c041b480d1bb6780f789 SHA-256: 9d92efec156096cf5e3392330f77d9a4e36a8abf2e443c8c042456cfce7709a2
140 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific malicious redirector URL, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains the malicious URL and appears to be a lure for a 'basic electronics pdf tutorial'. The presence of numerous links to external PDFs, many hosted on Shopify, suggests an attempt to manipulate search engine results or distribute content through a seemingly legitimate platform. The primary malicious URL is https://ttraff.ru/pify?keyword=basic+electronics+pdf+tutorial+point, which is a known malicious redirector.

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=basic+electronics+pdf+tutorial+point
    • http://files.artsourceco.org/uploads/1/3/0/8/130874210/4757712.pdf
    • http://juket.wompostcoop.com/uploads/1/3/1/4/131454762/bukojo.pdf
    • http://files.conductorbeverlytaylor.com/uploads/1/3/1/6/131606169/narirag.pdf
    • http://files.quicktan423.com/uploads/1/3/0/8/130874086/guletut-zebub-jepuvez.pdf
    • https://cdn.shopify.com/s/files/1/0431/2442/4853/files/bagnomaria_1999_full_movie.pdf
    • https://cdn.shopify.com/s/files/1/0436/1243/8685/files/rebere.pdf
    • https://cdn.shopify.com/s/files/1/0429/8063/8879/files/mortgage_broker_fee_agreement_form.pdf
    • https://cdn.shopify.com/s/files/1/0434/3182/1473/files/kozixogewewew.pdf
    • https://cdn.shopify.com/s/files/1/0437/8470/0055/files/xagofovejoxefudibefipadud.pdf
    • https://cdn.shopify.com/s/files/1/0429/5000/0791/files/37402779871.pdf
    • https://cdn.shopify.com/s/files/1/0435/4677/1607/files/mopiba.pdf
    • https://cdn.shopify.com/s/files/1/0462/4452/8288/files/17219720956.pdf
    • https://cdn.shopify.com/s/files/1/0433/3669/5959/files/ketikujov.pdf
    • https://cdn.shopify.com/s/files/1/0433/4505/1797/files/ditiwivapesexa.pdf
    • https://cdn.shopify.com/s/files/1/0435/8933/7256/files/gulenuwitatexikoke.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_off0000b7dc.bin
f03052f4482b04c4826d96fe270eb04c9bd003bd8d1a22bed3479a2d49df9def
pdf-font-stream PDF embedded font (sfnt) at offset 0xB7DC 5200 bytes
font_01_sfnt_off0000c989.bin
e0aa5caeb20ee66903c1a420a04847622d5302de854e5cc58f4ae4239b9c6929
pdf-font-stream PDF embedded font (sfnt) at offset 0xC989 10244 bytes