Malicious PDF — malware analysis report

Static analysis result for SHA-256 238c6df20842a062…

MALICIOUS

PDF

40.2 KB Created: 2020-08-09 21:56:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85ae798d6bad2661eae864f218bebc30 SHA-1: ac5f29066e5874781ab129fcc5801f049acd3bd2 SHA-256: 238c6df20842a06243102f51c8af6f30ba498e829ba8e734f8f97cf7fe897a0d
140 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a handbook download, which is a common lure for phishing or malware delivery. The document also includes a callback lure, suggesting a potential for social engineering. The presence of numerous external links, many pointing to benign Shopify URLs, indicates a link farm strategy to improve search engine ranking and distribute malicious content.

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.com/pify?keyword=oxford+american+handbook+of+clinical+pharmacy+pdf
    • http://files.mindbodycounselingllc.com/uploads/1/3/1/0/131070485/dufiludodeduji.pdf
    • http://files.bannisterrunning.com/uploads/1/3/0/7/130740033/gimedufa.pdf
    • http://files.thankschuck.com/uploads/1/3/1/4/131407138/guxafet.pdf
    • http://files.gregantoursireland.com/uploads/1/3/1/3/131380915/eaf711e26ad623.pdf
    • https://cdn.shopify.com/s/files/1/0438/0655/6320/files/financial_accounting_journal_entries.pdf
    • https://cdn.shopify.com/s/files/1/0436/1424/0931/files/factores_bioticos_y_abioticos_de_un_ecosistema_acuatico.pdf
    • https://cdn.shopify.com/s/files/1/0434/9516/2022/files/blood_type_b_food.pdf
    • https://cdn.shopify.com/s/files/1/0432/6014/9910/files/fanesaretijodewilabarof.pdf
    • https://cdn.shopify.com/s/files/1/0429/9803/8679/files/95767509406.pdf
    • https://cdn.shopify.com/s/files/1/0429/5108/2143/files/guzapepugok.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mojedisubeweful.pdf
    • https://cdn.shopify.com/s/files/1/0438/1615/7344/files/6583604937.pdf
    • https://cdn.shopify.com/s/files/1/0428/2286/0966/files/wefavopobisavonavif.pdf
    • https://cdn.shopify.com/s/files/1/0429/5367/0822/files/carbono_primario_secundario_terciario_quaternario_exercicios.pdf
    • https://cdn.shopify.com/s/files/1/0436/3055/9390/files/94036421814.pdf
    • https://cdn.shopify.com/s/files/1/0429/2568/6951/files/13101665760.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005232.bin
3387c24b3b005dc7abd8f65b32f1dbc211fc8060b4783650a46f6e0bb5ae022f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5232 5328 bytes
font_01_sfnt_off0000641c.bin
ebe5908d24d4e2b3820d71a9ef832616d46210bdbabb4dd43e19d9a0407e4d9b
pdf-font-stream PDF embedded font (sfnt) at offset 0x641C 9712 bytes
font_02_sfnt_off0000854c.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x854C 4324 bytes