Malicious PDF — malware analysis report

Static analysis result for SHA-256 9687b3c694846e8a…

MALICIOUS

PDF

54.6 KB Created: 2020-08-10 22:52:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a802c2799409a52d157579877702ace SHA-1: 1b52f87a266a2a32b4b2d7e98296ef6c182a1045 SHA-256: 9687b3c694846e8aab73f28687899d759d2ca0ace4def31fe342a3af957f41b2
150 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector, indicating a phishing or scam attempt. The primary malicious URL is https://ttraff.ru/pify?keyword=anxiety+workbooks+for+adults+pdf, which is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains references to the same URL and other Shopify links, suggesting a lure for users to download seemingly benign files that lead to malicious content. No scripts were extracted, limiting the analysis of direct payload execution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/pify?keyword=anxiety+workbooks+for+adults+pdf
    • http://files.alchemymovement.co.za/uploads/1/3/1/3/131398555/c3c9f98cebf178.pdf
    • http://files.mensshedclydach.co.uk/uploads/1/3/0/7/130775299/c744f744a2.pdf
    • http://files.sweetcelebrationsllc.com/uploads/1/3/1/8/131871501/46626.pdf
    • http://wodovaf.michaeljameslynch.com/uploads/1/3/1/3/131383791/3675404.pdf
    • http://files.constructionindustryhelpline.com/uploads/1/3/1/6/131607404/wutabojagek_zifuwopadabi.pdf
    • https://cdn.shopify.com/s/files/1/0434/8212/0357/files/78498039278.pdf
    • https://cdn.shopify.com/s/files/1/0431/9785/7954/files/49432096301.pdf
    • https://cdn.shopify.com/s/files/1/0433/9453/1493/files/97411533923.pdf
    • https://cdn.shopify.com/s/files/1/0448/9432/2855/files/75297608166.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6849/files/14599918485.pdf
    • https://cdn.shopify.com/s/files/1/0431/7013/6218/files/business_writing_test.pdf
    • https://cdn.shopify.com/s/files/1/0429/7523/2153/files/9955766644.pdf
    • https://cdn.shopify.com/s/files/1/0440/2626/5765/files/68752122055.pdf
    • https://cdn.shopify.com/s/files/1/0436/3865/3086/files/nivevetegeforavidudabuso.pdf
    • https://cdn.shopify.com/s/files/1/0431/0528/8352/files/85659533339.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/4952854333.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kosetomamevisired.pdf
    • https://cdn.shopify.com/s/files/1/0438/3437/6352/files/apocrifos_del_antiguo_testamento_tomo_v.pdf
    • https://cdn.shopify.com/s/files/1/0453/6067/7019/files/zuwunu.pdf
    • https://cdn.shopify.com/s/files/1/0432/3000/3358/files/70018616096.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_off00009708.bin
ebd4710afb439a0f460402bd40e53ecbae14b59338f3d665a80b34573fe8c139
pdf-font-stream PDF embedded font (sfnt) at offset 0x9708 5492 bytes
font_01_sfnt_off0000a9d5.bin
0a7162bf622e2a5ed27b9a565c889e6f17e92f5efc05aaed7f20632956a95226
pdf-font-stream PDF embedded font (sfnt) at offset 0xA9D5 10348 bytes