Malicious PDF — malware analysis report

Static analysis result for SHA-256 24dc1a2c50b8649c…

MALICIOUS

PDF

48.4 KB Created: 2020-08-10 03:31:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b8577c5cf070219656cd64d3cc69703d SHA-1: c017dc7c8b299346eb0785eb364790d1bf44a558 SHA-256: 24dc1a2c50b8649c45d217f55a2bac35dcb5d896c7a7fdb95ed5a78cc56751c7
150 Risk Score

Malware Insights

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

The PDF contains a high density of external links, many of which point to a redirector service. The document body text, though partially corrupted, includes a URL that appears to be a lure for 'aadhar card form for child pdf', directing users to a malicious redirector. This suggests a phishing or scam attempt designed to lead users to malicious content.

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.cc/pify?keyword=aadhar+card+form+for+child+pdf
    • http://gaxesex.alabamagirlsstate.org/uploads/1/3/1/3/131379730/wiwoweve_lurojowasiras_wowupudasen_vofewalupev.pdf
    • http://files.tuftslaw.net/uploads/1/3/0/7/130739169/c320ce5fab062a.pdf
    • http://files.rodneyhowellcollection.com/uploads/1/3/0/9/130969543/5727106.pdf
    • https://cdn.shopify.com/s/files/1/0429/2821/0086/files/hexagon_explosion_box_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/6172285624.pdf
    • https://cdn.shopify.com/s/files/1/0435/2117/9802/files/dasapepi.pdf
    • https://cdn.shopify.com/s/files/1/0433/1631/4277/files/genusovubede.pdf
    • https://cdn.shopify.com/s/files/1/0428/2561/3475/files/469420290.pdf
    • https://cdn.shopify.com/s/files/1/0432/5723/3576/files/90095369211.pdf
    • https://cdn.shopify.com/s/files/1/0430/0662/3903/files/pdf_to_word_document_converter_mac.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/42334561022.pdf
    • https://cdn.shopify.com/s/files/1/0438/7520/5288/files/47453486024.pdf
    • https://cdn.shopify.com/s/files/1/0437/8220/9698/files/ziretobagefevexasidogab.pdf
    • https://cdn.shopify.com/s/files/1/0432/9809/5272/files/collins_english_dictionary_and_thesaurus.pdf
    • https://cdn.shopify.com/s/files/1/0431/5886/4028/files/zefexumujatuributikis.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_off0000809d.bin
a5d7e590fc7019ec998ad2cd5155b8ee9a0063eb861892d06964ca18dc3a1cad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x809D 5204 bytes
font_01_sfnt_off0000922f.bin
6d9ce76d5c12e47efe71e87216725ffec6ea9e746fea6012aa89f8eaca895689		 pdf-font-stream PDF embedded font (sfnt) at offset 0x922F 10136 bytes

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