Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccdaaea9472e28be…

MALICIOUS

PDF

50.6 KB Created: 2020-08-14 05:37:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84183307ec821ce226bc735fdfba4a9a SHA-1: deb785fe15f77c0f29cbdcb79069406de62cebfa SHA-256: ccdaaea9472e28bece1edb71e60d0fe32228dae1ada617351041ed9dee36a52a
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a specific redirector URL, indicating a phishing or scam attempt. The primary malicious link, 'https://ttraff.cc/pify?keyword=completing+the+square+tes+worksheet', is designed to lure the user into clicking it, likely leading to further malicious content or exploitation. The document body, though heavily obfuscated, contains this URL and references to a worksheet, reinforcing the lure.

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=completing+the+square+tes+worksheet
    • http://pexezo.bgirlysport.com/uploads/1/3/0/7/130739591/sivowarifod-sujabujozow-vabumatezo.pdf
    • http://files.whitetigersec.com/uploads/1/3/1/3/131398591/xuxemizo-kidufepelunara.pdf
    • http://files.balloontwistersdcvamd.com/uploads/1/3/0/8/130813755/85fb29.pdf
    • http://files.craftacrosstime.com/uploads/1/3/1/0/131070604/jesijetofozovuzal.pdf
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/kesetaputenatuxuxa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74133662670.pdf
    • https://cdn.shopify.com/s/files/1/0433/8191/5802/files/binomial_probability_distribution_examples_solution.pdf
    • https://cdn.shopify.com/s/files/1/0428/6644/2406/files/wetivujijelut.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/riginijulu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8133/4951/files/general_aptitude_test_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0435/6797/2515/files/69909605824.pdf
    • https://cdn.shopify.com/s/files/1/0434/8015/4269/files/calculating_standard_deviation_worksheet_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0446/6363/6131/files/algorithms_in_c_parts_1_4_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/1610/0776/files/bubble_shooter_3_game_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0433/8126/0438/files/rixorutaro.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_off00007b8e.bin
c767f809a83251307ed3cd36872f3fe4729422a3f3091f0b4a55cba6075bf681		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B8E 5420 bytes
font_01_sfnt_off00008de2.bin
cd1978afa04fdfaeadb2486b8e66d065b01ba656632974fb5372deb6b760f7b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DE2 14676 bytes

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