Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e2327bd01204ead…

MALICIOUS

PDF

51.6 KB Created: 2020-08-17 07:41:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2b676caeb267c5ab6f9974d5d703d08e SHA-1: 6341b142c6635fe1bd1e780c907e6ea98d617438 SHA-256: 9e2327bd01204ead484d44c8b0f7c1150f1a0726a472ee0677a1ac67f05071a6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains the string 'Cancer de mama pdf' and the malicious URL, suggesting a lure related to health information. The presence of numerous external PDF links, many pointing to Shopify, indicates a link farm technique to potentially improve search engine ranking for malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.cc/pify?keyword=cancer+de+mama+pdf
    • http://files.ladymaeimpressions.com/uploads/1/3/1/3/131379434/ba398.pdf
    • http://xedejosul.mountmmbc.com/uploads/1/3/0/8/130814673/lozilukusal_duluruzuwaj_kajosazepubuko_negiwepijerep.pdf
    • https://cdn.shopify.com/s/files/1/0429/9853/0202/files/conductometric_titration_of_weak_acid_and_strong_base.pdf
    • https://cdn.shopify.com/s/files/1/0432/7863/1072/files/55517892789.pdf
    • https://cdn.shopify.com/s/files/1/0431/5522/6773/files/magia_y_brujeria_en_mexico.pdf
    • https://cdn.shopify.com/s/files/1/0433/9928/2845/files/coffee_shop_business_plan_example.pdf
    • https://cdn.shopify.com/s/files/1/0437/2830/6330/files/arduino_motor_shield_l298_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0435/9333/4947/files/banking_maths_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/2937/2832/files/38444431304.pdf
    • https://cdn.shopify.com/s/files/1/0434/4224/1688/files/54186246255.pdf
    • https://cdn.shopify.com/s/files/1/0436/4333/8912/files/network_controllers_drivers_windows_7.pdf
    • https://cdn.shopify.com/s/files/1/0433/1238/2117/files/gizekude.pdf
    • https://cdn.shopify.com/s/files/1/0430/7596/0985/files/29380637248.pdf
    • https://cdn.shopify.com/s/files/1/0432/0844/2020/files/42178299169.pdf
    • https://cdn.shopify.com/s/files/1/0431/0165/1101/files/xozuwav.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/
    • https://cdn.shopify.com/s/files/1/0431/5522/6773/files/magi

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008de2.bin
e718361894722043723f2ae1edd25d7f213df02c85d37aa1ee55d15f9f00cb3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DE2 4996 bytes
font_01_sfnt_off00009ec9.bin
2d9971f0d4ccca443f1eb62115caf7e7193ae4d2f2616b89ff0ebe0336d92387		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9EC9 10144 bytes

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