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) First seen: 2026-05-08
MD5: 84183307ec821ce226bc735fdfba4a9a SHA-1: deb785fe15f77c0f29cbdcb79069406de62cebfa SHA-256: ccdaaea9472e28bece1edb71e60d0fe32228dae1ada617351041ed9dee36a52a
194 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.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=completing+the+square+tes+worksheet In PDF document text
    • http://pexezo.bgirlysport.com/uploads/1/3/0/7/130739591/sivowarifod-sujabujozow-vabumatezo.pdfIn PDF document text
    • http://files.whitetigersec.com/uploads/1/3/1/3/131398591/xuxemizo-kidufepelunara.pdfIn PDF document text
    • http://files.balloontwistersdcvamd.com/uploads/1/3/0/8/130813755/85fb29.pdfIn PDF document text
    • http://files.craftacrosstime.com/uploads/1/3/1/0/131070604/jesijetofozovuzal.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/kesetaputenatuxuxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74133662670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8191/5802/files/binomial_probability_distribution_examples_solution.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6644/2406/files/wetivujijelut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/riginijulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8133/4951/files/general_aptitude_test_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6797/2515/files/69909605824.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8015/4269/files/calculating_standard_deviation_worksheet_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/6363/6131/files/algorithms_in_c_parts_1_4_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1610/0776/files/bubble_shooter_3_game_for_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8126/0438/files/rixorutaro.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007b8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B8E 5420 bytes
SHA-256: c767f809a83251307ed3cd36872f3fe4729422a3f3091f0b4a55cba6075bf681
font_01_sfnt_off00008de2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DE2 14676 bytes
SHA-256: cd1978afa04fdfaeadb2486b8e66d065b01ba656632974fb5372deb6b760f7b1

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